Did you even bother contacting their customer care concerning this issue, what did they say? Atleast, they should have given you back your money.
I asked via their email support, because until then I didn't known the reason for my ban, after waiting a day I got reply that I broken their terms by opening multiple account with same device.
I said it was a mistake because google auto signed up on another browser. but after waiting 1 more day they sent me long list of KYC.
I didn't had the information they had asked for like deposit id or something which I am able to get when I am logged in into the account by my account was banned so didn't able to log in.
some of the documents they had asked for are not available at the time.