No response or service

I have written 3 complaints on FNBs website, the first being 3 weeks ago and I have still not received so much as an acknowledgement. They sent me a new credit card with my old ****en surname on, which I updated at the Walmer Park branch last year already. I transferred money over from my savings to my cheque account the day before my debit orders, which is normally instant, however this time it wasn't and they charged me for the overdraft facility. I have not received my ebucks statement, but am sure this will in turn also be affected. Someone needs to please correct this, so that I do not have to hassles with different departments again, with the one not knowing how to assist the other.