Consultants don't their work and don't communicate

I received very bad service at the Standard bank at Springs mall. The consultants don't do their work and have very very pour communication. I app**** for a credit card 4 weeks ago. I am going in for my 5th week. I have been helped by 3 consultants where the one did less work then the previous one. I had been 3 times in the branch. Where i signed my contract. I took the email and telephone number of the Consultant. He has been the most helpful but al the sudden he stopped communicating. I NEVER RECEIVED THIS BAD SERVICE BEFORE.