Vodacom zero assistance, zero customer care!!

I wanted to cancel 2 contracts in July 2020. I spoke to a Vodacom agent on 01 July 2020 to cancel the contracts. She only cancelled one and not the other two. So up to 10 July have contract them daily in order to get the other two contracts cancelled. I was happy because the contracts were cancelled. Only to find out 1 Aug that the contracts were not cancelled, so it became again a few days of calling to get the other two contracts cancelled so by 10 Aug, i got the other two contracts cancelled. But however i also realized that they have cancel a contract that i never even spoke to them about. Now i have been struggling since 10 Aug to get that contract back. I have called Vodacom so many times that they have blocked my number and there is no way i can sort this out now. I received my statement now, they are billing me amounts of which i did not request them to. How do I sort this out if i cannot even phone them no more, o and i did go into the shop with no avail they cannot assist me.