PATHETIC SERVICE WITH BAD ATTITUDES AND EVEN WORSE CALL CENTRE!!!!!

So i received my account statement from Buffalo City Municipality dated 21/11/2017 and as I'm going through it, I noticed and extra charge of R2108,38 and its called "BS ADJUSTMENT". I have never heard of it before and I proceed by calling the call centre on Friday 01/12/17 and the gentleman whom i delt with had no clue whatsoever what i was talking about and he just hung up on me. After uncountable times of trying to get throuhg to them each call agent greats politely but when they hear what I'm inquiring about, the same thing happens, they mute the call and eventually hang up. They are PATHETIC and have no clue about customer priorities!! I want to go directly to them in Beacon Bay and get them to reverse this bs because i refuse to pay for services I am unaware of..