Paid cash amount of R2000 into my Credit account,

This is with great sadness and disappointment to lodged complaint : On 03 March 2015 I paid in cash amount of R2000 into my credit card account. The money didn't reflect or no notification via sms was recieve, after two days I approached the bank, and gave my deposit as proof, they promised to follow it up. After week nothing has happened I went to bank again and they promised the Friday 13th of March turnaround time they have an answer, it didn't happened. I recieve one call from Montague branch the Saturday to say they are working on the case and will inform me. I also contacted credit division in the process and on their system nothing has showed that the branch has lodged complaint. What is so disappointed the bank never send me an sms or email to informed me they are busy with the case and assured their commitment to sort it out with definite time frames attached. Up till today I heard nothing from the bank, now what has happened to my money I paid in, in the process my credit rating is affected due to this transaction. Please assist urgently.