Call Centre people do ********l upgrades

On 30 October 2017 a male from a call centre contacted me and told me he can upgrade my 2 gig data for number ********** 724 to a 5 gig. He opened a new line for me which I did not ask for and did a normal upgrade on number ********** 724. An hour later a female from a call centre contacted me and I told her that her colleage also contacted me. She also did an upgrade for me on number ********** 639 which I did not ask for. Since 1 November 2017 I have been trying to cancel these 2 upgrades. I am sent from pillar to post. Yesterday 8 November 2017 I got a hold of a lady called Khuseluua on number ********** to cancel the above upgrades. To my surprise she did an upgrade too on number ********** 229. I want to cancel each and every upgrade done by the sales people since 30 October 2017 because I did no say yes to any of these upgrades. They are like vultures just doing what they want. I have a full time job and can not do it as I am on the phone the whole day trying to sort out this mess. The reference numbers which I received via cellphone is quote: 1- ********** ********** , upgrade order: 1- ********** ********** , ********** 4724, upgrade order: 1- ********** ********** , ********** 7639, upgrade order: 1- ********** ********** , ********** 1229. The numbers I was given to contact was ********** 666 / ********** / ********** . Please cancel upgrades and cancel contracts made by the sales people from 2017.10.30. My cell no ********** 728, Mrs Helma Martins THESE PEOPLE SAY THEY ARE CALLING FROM VODACOM GIVING VODACOM A BAD NAME BECAUSE I GET BETTER SERVICE AT THE LOCAL VODACOM SHOP