Credit Card Payment Query

A cash deposit of R4000 was made on my credit card, the depositor did not use my credit card number but used his name. This deposit was made on 20 February 2019 at Cresta branch at 15:55. I only realised that this deposit was not reflecting with my next credit card statement on 19 March 2019 as this is the only form of communication that I receive from Standard Bank. I have since made several calls to the call centre and my husband went to the branch to submit the deposit slip, but still nothing has been done. This is highly frustrating as I'm the one who is constantly trying to fix this with no communication from Standard Bank Credit Card division or Standard Bank Cresta Branch