Complaining

Capitec bank just traumazid me, R250 was deposited into my account by uknown person so I didn't notice that, I went to Capitec to do some few and then I deposited an amount of R700 and then the following day I wanted to use funds that are in my account the app wasn't working trying to download a statement it shows no transaction I went to the branch they told me about this R250, I didn't denay I said I did not notice and they wanted affidavit with certified copy of my ID I did that and wait for the outcome as Im willing to pay the R250 and used the remaining balance.. So the is saying you no long banking with Capitec your account is suspended.. What about my funds, they haven't called about this R250 and diceded to freeze the account that I'm using under customer Values was treated unfairly. What kind of a bank can do that to a customer, May I have funds that was in my account.. I'M SO SAD AND UNHAPPY.. I trusted this bank even people says bad things about it until it was done to me