Telkom has the worst Customer Service

I've been a client of Telkom Mobile for the past 6 years and refered loads of friends to port their number to join Telkom but will start thinking about porting my number to one of the other subscibers because of Telkom's bad customer service.

It is now the second time my online application for a second contract got cancelled due to Credit Vetting and according to customer service it is because they couldn't get the proof of employment because my Manager didn't answer her phone, surely you don't just decline the application because of that reason??? They can check my existing Contract of the past 6 years and see my employer is still exactly the same as 6 years ago or try to phone the manager again.