Proof that a bet was voided isn't proof of a scam though.  If we weren't dealing with a brand new account on both the book and this forum, I might look at things a little different.  But you made 5 bets, and the one in question was bigger than all the others and it was made on the outcome of a single table tennis point.  There are players who regularly create new accounts at online sports books to take advantage of some weakness they found.  When they are caught, banned and not paid, they create a new account here and make a bunch of untrue claims.  Then they go back to the same book, create a new account and start all over.

You check all the same boxes. 

And while this does involve 1xBit since you played there, don't take this as any sort of endorsement for them.  I haven't put much effort into the years of 1xbit drama, but I think it's safe to say they have one of the worst reputations on the forum and if anyone were to ask me if I thought they should deposit there, I would say no.  Definitely not.