Vodacom: Poor and pathetic customer service

I am extremely upset with the poor and pathetic customer service received from Vodacom. I was contacted in December 2018 by their sales department and offered an upgrade on my account that according to the sales person, would work out at least R100 cheaper per month at the time. I agreed to the upgrade via telephone and received an SMS confirmation of the upgrade. The upgrade was activated on 13 Jan 2019. When I received my account on 14 Jan 2019, my account was R253 more expensive than my original account before the upgrade was offered to me, and not the promised R100 cheaper that my original monthly account of R735 per month. I contacted Vodacom immediately on 14 Jan 2019, ref no 1- ********** ********** to inquire why my account is more expensive after the upgrade then it was before the upgrade, since I was placed under the impression my account would be at least R100 cheaper, because why else would I have agreed to take the upgrade. I was informed that they will have to locate the call to check what was offered to me, and they will contact me again to let me know the outcome of this investigation. I requested to be put back on my old package as I don't want the apparent upgrade as it clearly was not cheaper. I was never contacted back by Vodacom but received a credit of R287,99. I assumed that the matter had been resolved. I received my February 2019 account and once again my account is a mess as I was charged for an additional substitution of R100.62. I once again immediately contacted Vodacom on 08/02/2019, and after trying to get through for at least 30 minutes without the call being answered, I hung up. I tried again this morning and was able to reach Vodacom. I was given a ref number 1- ********** ********** and told this query will only be attended to within 7-14 days. This is what really upsets me! As the customer, I have to battle for the past 2 months to get the mess caused on my account by Vodacom themselves, after lying to me, resolved and then I have to WAIT for almost 2 weeks! I have never been treated so poorly as a customer. I have been a client for a very long time and can not believe that this is the treatment I get after always paying my account on time. I will never ever be able to recommend Vodacom to anyone I know, as I have experienced their poor customer service first hand. Mr. JK Viljoen