Vodacom...endless money pit

My vodacom line is been cut since 05-01-2018. I have paid since october 2017 R13 110.00 and still my account shows arrears of nerly R4000. You can only phone the USELESS call centre and nothing comes to and end or point where you can resolve this problem. I cannot find out how my account is run up to this amount and STILL is in arrears. My recent bill is over R2000....i havnt used the phone or could make calls since 5th of Jan. How is this possible....AND HOW IS IT THAT YOU ONLY GET TO TALK TO INCOMPATENT STAFF WHO CANNOT GIVE YOU ANSWERS AS TO REGARDS TO MY ACCOUNT. All you have to do is pay and pay and pay....you cannot get to talk so someone who can actually HELP sorting out the problem. Professionally PATHETIC!