[janoc]

Ehm, nope. Unless your complaint is a very obvious one (i.e. seller didn't send anything at all or the item has visibly not been delivered from the tracking info), good luck.

E.g. I had obviously fake EEPROM chips delivered, they weren't even new (they contained data from the previous use!). I have opened a dispute, posted the evidence that the chips are relabeled fakes - and promptly got it rejected both first time and on appeal. The grunt handling it had absolutely no idea what my complaint was about, I have received my goods, so what more do I want?

Fortunately it was only a few euros worth so not big deal - I have opened the dispute mostly to point out that the seller is a fraudster, not to recover my 15€ or so back. Tough luck ...

Over the years I had more luck sorting complaints out on AliExpress directly with the sellers because they are afraid of losing their ratings and thus a large portion of business (people usually sort by price and then by ratings). The support staff is hopeless in these cases.