I am not happy about Dstv this the second time, posting my query, every month there is always a discrepancy with my account and they don’t solved it, now it’s 3months with the same issue, regarding my account

I am not happy about Dstv this the second time, posting my query, every month there is always a discrepancy with my account and they don’t solved it, now it’s 3months with the same issue, regarding my account. I must call or send them message every month after I get my statement, because of the incorrect billing and I see that there not willing to solve it.