Too busy, no concern for customers.

Agent phoned me to upgrade my contract which I have not upgraded for about 5 years. I agreed and signed the necessary contract. I got a email confirming the upgrade and that all the free minutes and data were had been added to my balance. I checked and it was there. However in loading the contract they have disabled my Mobile Data Service. So I cant retrieve any mail or WhatsApp's that I use to communicate with my clients. I notified the argent right away, and she suggested i restart my phone. I did this plenty of times. I went to a MTN store, they tried and could not fix it. They dialed 135 from my phone and told me to sort it out with them. Anyway after spending an hours on the phone telling the same story to 3 agents, I was cut off. Spoke to the agent this morning and she just told me that MTN have so many departments and she is in sales and will escalate the query to her manager. IM STILL WAITING FOR ANY RESPONCE!!!!!!!`