MTN customers service

I have taken a contract with them over a month ago and till now the sim card is not working. I have wasted over R150 airtime just by calling them and being place on hold or to be transferred to someone else. I have emailed them repeatedly with regards to my issue yet they still can not solve my problem. My time as an employee is wasted as I have a lot of other work to do but they just put me on hold and expect me to re-explain my situation again and again to several other people. Then I should call this number and that number. This is really ridiculous. I'm not a rich person that just has time and money to waste who will compensate for all of that. It's over a months and this sim is not working. I'm really disappointed.