I sold few coins on vindax that worth 10$ and I don't receive any in my wallet after withdrawal, I track transaction ID on etherscan and it says 'Failed', then I head to their telegram group to complain, guess what happens next? I was told to deposit 60$ worth of Eth to an address from a PDF, I screamed scam and they block me off their telegram group, here is a screenshot

All vindax exchange team are scammers, you've been warned, stay out of this exchange at all cost
Maybe it was an scammer on the telegram they are going to say that they are part of the team even if it is not, don't trust any person that is pm you they are just going to get your data and they will claim it on the true support beware on this kind of scammer they are expert on scamming people.