Unable to cancel contract since March 2019

I've been trying to cancel my vodacom contract since March 2019 and to this date have not had any luck in getting this done. Numerous calls have been made to the call centre as well as service requests logged and yet debit orders still ran off mtly account. They switched my package from one to another without consent whereby I received airtime and paid for that as the handheld was "paid up". I paid around R850 a month for this that also includes a wifi router package at R299. I continued to pay as I did not want to stop receiving the data from the router. Ive been to numerous stores and have made how many calls to the call centre with no joy! I then stopped the debit order hoping someone would call me and yet nothing. As mentioned previously my debit oder was around R850 which I stopped they then sent an invoice of an whooping R2400 the following month and stopped the lines (router and sim) told me to pay so they could open the lines to have it cancelled. I was also advised that they do not have any proof that I have been trying to cancel and when I asked about the call recordings they said that not one call recorded! When asked where the call centre is so i could personally go in to have it sorted they said that they dont know hahahhahahahaha. Both the call centre and legal department are not able to assist arranging the credit as I do not want this and cancel my contract. It is now January 2020 and soon it'll be a year that I have been trying to cancel this. The number in question is *** I am available on ***