Account payment not reflecting on mtn system

I made a payment of R800.00 on 30th March 2015 for my mtn account as usually, but on 15th April 2015 my cellphone and internet were disconnected. I called mtn call centre but I was forever waiting for the consultant to assist me and could not get anyone to assist me. I made a payment of R50 on 16th April 2015, but my phone was still disconnected. I called mtn call center and got assisted by Millicent, I sent her my proof of payment but my services were still disconnected. I went to mtn shop at Clearwater mall on 17th April2015 and got a gentleman named Tshepo to assist me, I gave him the proof of payment and he said he has emailed it to my credit controller (Portia Motsepe). I ddnt get any assistance as my services were still disconnected. on 20th April 2015 I went to mtn shop at Westgate mall and I got assisted by a gentleman named Mr Moyo, I provided him with my proof of payment and I emailed him and Portia Motsepe, till to date my services are still disconnected. I confirmed with my bank that the payment did go through. I confirmed the correctness of the banking details were I sent the money with the mtn shops that I visited. please assist me.