Bad service

Capitec freezed my account when i ask why they said because of the money i received in June n July 2022.They requested proof of payments for those two transactions n affidavit.how will i know who sent me money last year if i cant access my bank account or withdraw the statement. When i aske them to at least let me know who did the payment so i can go n request the documents they need they tell me that they can't disclosed.now im stucked can't use my fund's. I swear i won't advise anyone to go to that bank