bad customer service

I called on the 2nd of January to find out if I can increase my mortgage bond, they requested me to send expense for and email it, which I did. I called again after 2 days to check if they did receive it and they confirmed to me they did receive and they will contact me after 15 working days till too date I am still waiting for their call. I called customers service to check and I was told their number no longer exist I must email them. Even now I am waiting for their call. After being with standard bank for 17 yrs this is the service I get. This is totally unacceptable and extremely matter of urgent. I am not a happy customer at all