MTN Manger Ndumiso Zikalala is so ***********

I received an MTN contract sim card yesterday and I;m trying to activate the sim card. I called 135 and was told to speak to contract department and was told again to call *** which keeps ringing with no answer and called again 135 and was given another number which is *** and spoke to a supervisor Andile who transferred me to Ndumiso Zikalala (Manager) from billing department who told me he won't assist and wont escalate my quer. How *********** for a big company like MTN to have such managers like Ndumiso Zikalala