Service delivery decline.

I am 40 years with Standard bank but the last 3 years service delivery became poorer by the day. For the past week I try to get hold of their customer care people. I hold on very long and was at last answered. I was told it is a system problem and it will be fixed shortly. After five days the problem is still there. I sent a request for help as well as a request to call me back. After 3 days nothing happened. I do not want to call again and wait so long for nothing. Can Standard please stop advertising for new clients and start servicing their current loyal client base? If Standard bank carry on like this I am going to change to another bank.