Can't fix their mistake and I must just pay R850 extra per month

Someone from Elite phoned me in October or November to update 2 data contracts. Calls recording should still be there as evidence.

They completely messed up the upgrades and I am now paying R850 a month extra for contracts that should have stayed the same price or be cheaper.

3 months and they haven't fixed it, I keep getting billed extra per month and they say Vodacom needs to sort it out, Vodacom says they need to fix it.

I report it to Vodacom, a query gets opened and then nothing done and I start again. After initial logging of query you may hear from someone for a day and then they stop communicating regarding fixing the packages and refunding me the money that should never have been debited in the first place.