Vodacom worst service ever!!!!!

I am utterly disgusted with Vodacom's service. I have been a loyal client of Vodacom for more than 18 years and really cannot believe that they treat their customers so poorly. I upgraded my Vodacom contract at Game Welkom on numerous occasions because of the deals that they had which included two handsets. I was advised by the salesman and as per the add that the sim card was a free promotion sim and that I will not be billed for it. Low and behold I have been billed for it every month and this has been a non stop battle to cancel and to refund these sim cards. One of the sim cards is on my bill since 2019??? I phoned numerous times, sent emails but to date this is still not rectified. A Vodacom consultant phoned me and said I should sort it out with Game, but I am billed by Vodacom, seriously??? I phoned Game and they said to me to sort it out with Vodacom??? I want urgent attention on this matter!!!!