Suspended Account for no reason

Since MTN took Nashua Mobile over I suddenly have a credit limit and my account. I phoned the call centre last month and they lifted the suspension. This month I phoned again and explained to the consultant that I dont want a limit. I cannot have a R300/R400 limit and every month my account gets stopped. He lifted it with R200 which I told him is too little as it will cut out again in a day which it did. He said he will pass it on to admin but I never heard from them. My phone has not been working for over a week and it is the 4th of the month today (I got an sms on Saturday saying the suspension will be lifted in 2-24 hours) but I still do not have a working phone. Do not phone me, just fix this or email me and tell me what you want so that I dont have to go through this every month. I am almost upgrading and strongly doubt if I should stay with MTN