Frozen Account

I've had a very bad experience with Absa bank. We came back to South Africa end of May this year, and opened an account with absa to be able to link and pay for our 2 home loans. When we deposited money into the account, they froze it claiming a suspicion of *****. They have asked for proof of payment which we provided. The account has been frozen since beginning of August 2017 until now. I suspect that whoever froze this account from their ***** department has used our money for their personal use and they are waiting for funds to replace our money. This account was opened at Mall of Africa.