Abnoxious MTN agents!!

I did an upgrade on the mtn app last week and have had no feedback to date. I had the misfortune to call their call centre and from this morning have been transferred from pillar to post with no end in sight. I finally spoke with honey from the upgrades division who was supposed to sign me up for an whole new contract and she then with no warning transferred me yet again into the queue, the next agent, put me back into the queue after I asked for a supervisor and I was then transferred to retention. I spoke with Nancy Sekano, whose manager Sandra Mabunda was going to call me back. When she did they couldn't hear me because apparently my MTN line was bad and was crackling. One of the main reasons I have been with MTN for so long is because I love the network. I just hate having to deal with their employees! I was promised a call back by 2:00 and surprise nothing yet.. MTN call me about my upgrade I am tired chasing after you!