Bad service and *****ing of airtime by MTN

I had a very bad experience with MTN. I have been a client for 23 years . MTN is been taking my airtime and the refund was escalated this morning the amount of R200 . I was told that it was going to be done before 1pm. I have been calling I spoke to different agencies and they weren't helpful. I spoke to Ntokozo and she dropped the call on my ear. I spoke to Phumlani Dlamini he was not helpful you could here that he was rushing. I spoke to Tshepiso Kgotle and he promised to speak to his team leader and still the refund is not done. I'm very angry because I can't make calls because every airtime I put MTN takes it. I'm frustrated I need assistance and I after this i will change the network and I will tell the world about my very bad experience and service.