Bad service from Vodacom

I had 2 year contract with Vodacom that give me 500 megs data per month that ended 2018, I never requested an upgrade even though it was due. on the 1st March 2018 R 1037.00 was withdrawn from my back account by Vodacom, I then contacted them and was informed that i took out an upgrade and that the phone was delivered to a address in Johannesburg . I Live in Cape Town and know nobody in Johannesburg and did not visit there in the last year. When i contacted Vodacom i was informed of the upgrade. They blocked my number and i still received a monthly bill for services i did not receive. up till now i had to pay R 1 981.44 to keep my name clean even though i made and sent a affidavit stating that i did not do a upgrade. I am totally disgusted with Vodacom and will tell all my friends and ***orkers of the bad service i got from Vodacom. they were also suppose to protect my information from getting into the wrong hands and now i have to pay for their poor service.