Here's one (any advice appreciated as I'm absolutely fuming)
Toycentric has been my best customer for the past 1-2 years. Only issue I've had is since I changed my handling time to 3 days, I get a message 2 days after the sale consisting of "Tracking number?" Which I learned to ignore after realizing they never respond.
Nov 30 they open a case for a Rebels Assault Carrier, stating that the box had been filled with random bags and pieces of other sets - they didn't know where I sourced my sets, but the item sent was not correct. Now, 99% of what I sell on eBay is bought directly from a store or ordered online, and I inspect seals and overall condition. I checked my records and all of those sets came from the same Walmart on the same day. The box condition was quite good, there's virtually no chance someone bought this set, opened it and shoved junk back in, and returned it to Walmart for me to buy. So I replied to Toycentric stating as much, telling them I know they dropship, and that the third party buyer must be running a scam, for which I am not responsible. To no one's surprise, I got no response.
So about a week later I call eBay. To shorten the story, I called eBay 4 times over the next two weeks, as the automated system emails poured in, telling me to provide a return label since the return was automatically approved, etc etc. Every time but one I had to fight with the robotic idiot who first answers the phone in order to get to the escalation team who has actual brain cells to handle the situation. Each time I was told not to worry about it, that the buyer was not eligible for buyer protection through eBay anymore anyway, and that I would not be held responsible for the return amount despite the automated system being allowed to run it's course like the unstoppable AI juggernaut it apparently is. I spend 3-4 hours on this to make sure I didn't get screwed. I was given multiple reference numbers, notes made on the case, etc. etc.
End of December rolls around and I get an email from Paypal telling me the claim has been decided in the buyer's favor. I go and check and see I have a negative account balance equal to the original (minus fees) amount for this item. I'm pissed. I call eBay and after talking to a total jerk in the buying department (voice recognition was failing so I got routed to the default place I guess) I was made to call back. Got to the escalation team once again, and had to (as usual) get to the supervisor level to find out that toycentric had failed a chargeback through Paypal directly, there's nothing eBay can do about it, yada yada yada. At least he was nice.
So I just got off the phone with Paypal who basically told me to get f'd - because they sent me a notice on Dec 18 demanding a response by Dec 28 and I ignored that email (somewhat unintentionally, being assured by eBay this would all work out in my favor, though I didn't even recognize at the time it wasn't from eBay themselves). I explained the whole situation in detail and this asshat said nothing I said was valid and my 8 years of essentially flawless business didn't matter because I simply didn't respond in their time frame and they already refunded the buyer. He constantly pointed out I only responded to eBay and not to Paypal and I constantly argued that there was no way I could know the claims were separate, having come from the same return case. He said he could appeal it for me but wouldn't because it would be rejected anyway due to the failure to respond. I told him that was completely unacceptable, and either something would be done about the amount or something would be done about the jacked up system that allows this crap to happen. He said I would have to WRITE to corporate, gave me the address, and I demanded his name and supervisor number.
2211 North First Street
San Jose, CA 95131
Attn Paypal Corporate
And yes, I blocked toycentric as a buyer a few days after this whole debacle started. I am always patient with customer service reps until they A: Fail to listen to my words more than once, B: Show obvious failure to comprehend the situation AND resist my requests to be transferred or C : Repeat the canned drivel they are given after I point out that their canned drivel does not address the issue I am calling about. Unfortunately, I have learned that the way these people are trained it is almost impossible to get past them without being an *******.
And for what it's worth, the "return" showed up in my original (more beat up) box, with only the odd numbered Arctic Base Camp bags (curious), plus what appears to be some Minecraft (mostly very basic) bricks.
I wish I didn't have another couple of years to get rid of what's left I want to sell. I'm so over eBay and their buyer buttlicking, plus the eBay / Paypal conspiracy. Between that and Lego trying hard to ruin the collectible value of their product, what started as an amazingly fun and profitable hobby / side business over 8 years ago had turned into mostly just a headache these days.
/rant off