Capitec ATM stole my funds and transferred to another account.

On the 7th June, I deposited money into another account using cash and the account number. I have used this same account number various times. When the transfer went through, it went to a different account. The transfer slip showed a different account to the one that was entered. On 8th June I went into the branch in Claremont - They told me the atm might have been tampered with. They told me to come back on the 10th June (Monday). When I went there they told me they were still investigating, and I must go back on Thursday. When I went back on Thursday they told me the account number I put in was rejected so it sent it to another account - they said they have escalated to head office. I since haven't heard from them.