So sick of having the same issue over and over!

I have been battling with Vodacom for the past two months, and am so despondent already knowing that even this post might not achieve the desired outcome. Background to this on-going issue can be found in my previous post: https://www.hellopeter.com/vodacom/reviews/terrible-upgrade-experience-lack-of-customer-service-*** So, in May, Vodacom changes a package on one of my lines without my consent. This was in fact a "promo line" with zero subscription fees, so now I'm being charged. After who knows how many calls to your call center, a credit is issued and my debit order for June goes off, i.e. invoice amount minus - more or less - the overcharged subscription charge. Fine, right? Wrong! Seems everyone I spoke to seemed to overlook the fact that I was never charged for this line, and no one has changed the package back to the "promo" rate. Now, I've got another invoice, payable at the end on July, with an overcharged subscription amount, I called you guys already on the 4th of July (and again on the 7th) and nothing has been done yet, even though the consultant told me it would take 2 days to resolve. No feedback from anyone either. Am I going to have this fight with you every month now?