Bad service and attitude

I was due for an upgrade wit cell c n a consultant phone n assisted with that but changed my plan from prepaid to business line without my concerns...it took them approximately 7months to come to an agreement that after listining to recordings i did not give permission on changing my plan. I was then refunded some of the money and then informed them thst with the other contract i wont upgrading with them and fair enough they dd let me knw that the contract will be terminated on which date but now the problem is im expected to pay an amoumt of R1800 and some change okay i understand that R588 from the amount is for the other contract but the remainder of that money i dont know what it for and upon querying with them no one has answers they telling me it for adjustment...what adjustment no one has answers. So my line was blocked since 10/17.