Unhappy Absa Client

I am unhappy with Absa's extended/short fall department. I made a claim on the 17th of September, received a ref no via email and I have not heard from them ever since. I have sent several emails, with no responses and I have called them several times but the lines are always busy, or I get hold of people who do not get back to me. No one has got back to me at all with regards to my claim since the 17th of September and today it is the 23rd of October. I need this matter to be resolved as soon as possible because I am busy currently with purchasing a new car and I cannot because of this debt.