No client service delivery

I app**** for a overdraft facility the week of the 9th of April. I was a approved on the Thursday the 11th and received my letter and contract. It is the 18th of April and the money is still not available in my account. The consultant that is dealing with my query Granny segwapa has escalates this query and has involved her Team leader as well as manager to help me get this resolved and all they are told is that it is under investigation. How long should a client wait for feedback? How long should your internal staff wait for feedback to give to your clients. I have only been with you for two months and this lowest level of service I have ever received. I would like feedback on this matter as soon as possible. My own bank could not help me when I needed to be helped.