Terrible service for new customers

I app**** for a new contract with mtn at the menlyn maine store. This is due to the fact that i was turned away by mtn online because they said my ID is being blocked by the system. I handed in all my documents at the store and waited for feedback. I called after 2 days and they said there was a ********** account in my name. I told the consultant that i was aware of that as many years ago i was contacted by mtn who informed me of this and who investigated the matter. i sent through a police affidavit and was assured the matter will be resolved. Now almost 3 years later and i want a new contract the store says i must submit another affidavit and they will see what can be done....all the while i wait for the new contract. This is not service excellence. I have a very good credit score and conctracts with other mobile providers...is this how mtn handles new customers?