Line being unfairly cut

I am having an endless battle regarding my bill, I have paid almost R2000 to telkom on 26th June 2018 and they have cut my line off twice. When i question as to why, they give me random amounts of money which i owe them but none of these amounts reflect on any of my statements. I have paid the amounts according to my statement and i feel this type of treatment is really unfair especially if i am paying for it. Telkom please resolve this issue as i am a very disappointed customer!!!