Price lock is price suck

Good day We are currently so frustrated at the service (OR LACK THEREOF) that we have received from multichoice. We had a new Explora installed 2-3 months ago, and we are still not being charged the correct pricelock amount of R899 pm. Every month we have been called to say that we are in arrears or need to pay more than the price lock amount. Last month we paid R1940-00 (20 Sept) which was the amount that DSTV sms told us to pay. This is not correct according to price lock! In fact it is DOUBLE the price lock amount! On the 9th Oct, we received an sms stating that we must pay R1154-97?? We Called to query this, and they promised to get back to us in 24hrs, they didn't. WE are still waiting for that call. On 11 Oct, another sms to state that we must pay - R1193-68 Again we Called and they said that we were R254 in arrears??????? WHAT IS HAPPENING IN THAT OFFICE!!!!!!!!!! We cannot speak to anyone that can help us as everyone will call us back in 24hrs. That does not help our situation and as customer of more than 15 years, this is a travesty and i am disgusted at the level of incompetence in that office. i don't even think that they changed us to a price lock account and they are now milking us for money that is not due. We have since been disconnected and we cannot get an answer from anyone in management of supervisory level!! WHAT ARE YOU DOING????? I WILL BE TAKING THIS TO OTHER PLATFORMS AS WELL SINCE OUR 4 CALLS DID NOT GET ANY ASSISTANCE!