Standard Bank will not allocate payment made

This is my 2nd complaint on Hello Peter, my husband closed his Standard Bank credit card account, there was a small amount owing which should have been sorted through a debit order set in place. This did not happen which he was unaware of, so he was contacted by a lawyer from Norman, Bisset and Associates making him aware of an outstanding amount. He settled this amount immediately and sent through proof of payment as requested. Thinking the matter was sorted he app**** for a business overdraft at another bank only to be told that it was declined due to bad credit at Standard Bank. The payment was done on the 16th April and it is now the 7th July and the payment is still not allocated. When we phone Standard Bank we get put through to numerous people and then get told we need to contact the lawyers, when we do they say it's out of their hands and we need to contact Standard Bank. This is now impacting on my husbands business and after sending the proof of payment many times and speaking to many people no one will help us and no one can explain why this has not been sorted yet. Tarryn Bradford-Scheepers contacted me last week, but STILL nothing has been done!