Account Suspension

I have recently Joined DSTV and My Account is Upto Date , But My Account gets suspended every 2 days, when i call in, the Automated System says my account is Oweing , when i select the option to speak to a consultant,they say its upto date but cant explain why my account gets suspended every two days - this is really frustrating cos i have to call the call center every now and then, and its costing me money.. i have called in again to speak to the supervisor, when i was talking to her the call got dropped and they dont even have the guts to call back,