Bad service

I knew that by accepting a call from Vodacom I will end up with issues because that's a norm these days, it happened last year and I had to write a review and here I am back again. I spoke to a lady about a month ago who made an upgrade on my 2 contracts 1. Red Flexi 80 which I received a vodacom phone 2. Red flexi 475 which previously it was Red Flexi 260 this lady mentioned that she will upgrade my contract and I will be receiving R340 airtime I automatically thought it's going to be flexi 340 as I told her I wasn't ready to take a new phone yet but to my surprise my bill has now sky rocketed the original quote I received after her call says flexi 440 my invoice now shows flexi 475 and somebody please explain to me what Handset am I being charged for R529 when I did not receive any new mobile device and I specifically told the lady I'm not ready to take a new device. And I asked her if her upgrading this contract to 340 will not affect me 2/3months down the line should I know want to take a new device and she said it won't but now I see the contract term date says 2026 so will I still be able to take a device if I want it anytime or do, I now have to wait until 2026. Please can whatever **** that was done on my *** be reversed back to the 260 plan until I'm ready to take a device better yet maybe everything must just be resetted as before so that when my contract expires, I can be able to cancel it because I'm losing all the patience, I have with Vodacom lately and I cannot be growing grey hair because of a cellphone.