Pathetic service repeatedly

I am extremely appalled by the pathetic service i continue to receive from vodacom. I was contacted on the 10th January to upgrade my cell phone contract. I agreed to the upgrade which was supposed to be activated on the 1st Feb. On the 1st Feb the upgrade was not activated, so i called the call center only to find out that vodacom upgraded my wrong number (which is a Wifi device). They upgraded the Wifi device number with minutes! I have since been in contact with vodacom numerous times and they have still not actioned the cancellation of the upgrade on the incorrect number. I have since received a statement from vodacom charging me for the upgrade subscription on the incorrect number AND my normal cell phone subscription. I am beyond annoyed and disappointed in the unprofessional and uneducated call center staff who do not have the capability to assist me in this regard. I refuse to be a vodacom customer anymore and will ensure to communicate this unprofessional experience with everyone i am in contact with about vodacom, I will never recommend vodacom to anyone.