Line Suspended

I have 4 lines with MTN including a data line the data line was a huge amount I couldn't pay all at once I called MTN on 18/06/2015 at 9:54am spoke to Kelebogile made a payment arrangement to pay the data line over 2 months. The other 3 lines I was to pay as per normal which I have done but my phone lines except for 1 have been suspended I have tried to contact MTN but guess what the call center is still closed. I sent proof of payment to the collections department I get a snotty reply that I cannot pay separately for the other lines as my account is ONE. I have asked for the agreement I signed to say my account was ONE yet the contracts were all taken out at different times. I have asked for a reasons why Kelebogile made the arrangement if she was not authorised to I get NO response. I am so frustrated all I want is my contract end so I can move to any ****** network even if they operate with smoke signals its got to better than this. I cannot call my clients I cannot access my emails and I have been a customer for years and I have spent a lot of money with MTN and this is how I get treated