VODACOM ROBBING US BROAD DAYLIGHT!

I have never done this before but right now i am so frustrated by what i just experienced and experiencing!!! Vodacom is downright robbing me through ******** data activation - May invoice R923.58 1 GB data bundle that they claim was activated via ussd??? On the April invoice it was R667.52, month before that R323.33 and this has been growing since Dec 2022. At first I thought maybe I went over because of calls as the line is open to make calls however it kept growing and I queried. When i had the same query before i upgraded this number and asked that its locked for any kind of activations, it was confirmed that there won't be any activations on the number ever again unless I ask. I'm so disappointed at Vodacom for the very first time since I have been with them. Vodacom is robbing us daylight, even their billing system these days its milking money out of us, there's line rentals, handset installments, 2 comprehensive cellphone insurance on the same number...WHY VODACOM WHY?????