Vodacom Harassment

On the 13 January 2017 I visited the Vodacom store in Gateway Durban to get a premature cancellation quotation on my Contract. They supp**** me one with a payment due of R3,232.20. I payed this amount immediately and my contract was cancelled and my number moved over to pre-paid.

Around August 2017 I started receiving calls from Vodacom demanding payment for an outstanding balance. Each time they called I told them the same thing, that I cancelled my contract and payed all monies owed as indicated on the cancellation quotation. I even provided the with proof of the above.

It is now March 2018 and I am still receiving these calls and emails demanding payment. So now I would like to demand Vodacom to get off my back and stop harassing me for payments that I do now owe.