Terrible, poor, pathetic service

I recently took out a bond with Nedbank. I agreed to open a cheque account for a lower rate. Today I fetched my card and when registering for internet banking I found out my mobile number was captured wrong by the agent. Now they want me to go back to the branch to change my number which was THEIR mistake. I am already regretting opening an account with them and will gladly pay the higher interest rate. I phoned the branch at Mall of Africa and the phone just rings continuously. This is just 1 issue. I have some consultant that continuously emails me to let them know when I fetch my card, when I ask what the call is in connection with they reply please collect your card. This is extremely frustrating and a terrible 1st impression