Very poor billing and account systems

I have been paying DSTV R812 since October when we received the Explorer, to date that is what I pay every month. My services for this month has been suspended thrice due to paymnet shortage, i should be paying R839, but no one informed me that that is my new paymen, so I just got suspended but I paid and to top it all I spend over an hour my cell phone with the call center on three different occasions. I will certainly py the outstanding balance that I know of only now, but I work with a budget and I cannot just pay when they say i must. I feel that my service must be reconnected as it was not my fault for the less payment and I paid my subscription for February . Please have them reconnect my service