Slow service/ No service

So last week Tuesday , 14 May 2019, I went into a Nedbank Branch in George to apply for an increase on my overdraft. Usually you get the contract and the money clears within 48 hours or so , as I have done it in branch before. This time, I only received the contract a week later (Yesterday Monday the 20th of May) - I signed it at about 12.00 yesterday afternoon and until now I have not heard anything from the consultant or Nedbank at all - although overdraft increase should show within 24 hours after contract is signed, or atleast so it happened to me in the past? I am really unhappy with the service that I have received this time regarding my overdraft and just in general , that no one bothers to contact me and I have to keep following up to just find out something simple like "how long will it still take before the overdraft shows"