All agent tells me what i have on the statement is not on their system

Fro the past 24 hours i have been calling multi choice dstv and no one can explain to me the transaction of charges that are from 02 November 2017 until 03 march 2018. I asked all agents that i need to know why i am been charged 5 month in advance and all of them don have explanation. I went to the web chat and honestly i was asked if i know maths i should just make payment and still no one can help me. When i downgrade the decoder on the 30 of October through appchat i was told to make payment different of R157 which i made payment of 160 but now i am charged in advance. I asked all agents if i can send them statement but none of them want to accept. when i asked for reference number from lunga on app chat he told me there is no reference number i should just go make payment.