Bad service from multichoice

On the 29th of March I made a payment of R450 for my DSTV montly premium for the month of April. After making the payment is received an sms sayings that I need to make a further R25 to cover the whole premium of R473 and that was done. On Sunday the 9th of April our services were disconnected, when we called multichoice to make enquiries and I was told that payments were not made. I was requested to send a proof of payment of which I did and the services were reconnected on the 10th after having to call them again. Again on the 14th of April the service was disconnected and theyou are still saying the R450 payment is not reflecting. This thing is very irritating on my side because I have made the payments but their system is not showing it and I have to suffer for that, I am spending a lot of airtime calling them and I am unable to watch TV that I paid for. And everytime I call for a reconnection I am being charged for it.