Bad Customer Service and misleading agent who are greedy

I received a call a week ago and the lady told me they are offering me R200 airtime and I will still pay my R199 that I pay because Vodacom is giving more to their customers and I told her I don't wanna upgrade or get a new contract because I just upgrated in Aug/Sep 2023 .She said no I'm not upgrading anything.suprisingly she upgraded the secon sim that I get R65/75 not the main number.I didn't even know I can upgrade that number because it was a free phone when I did the actual contract.Mon the 06th Nov ,I called in and was told the invistigation will take 24 to 48 hrs to conclude and get back to me but today when I call in I'm being told they are sending an email and it will take + - 24/48hrs again for the response or less.I'm very stressed as im over indebted and I won't have that extra R200 to pay Vodacom as I already pay 2 contracts with you guys to an amount of +R500 now to add that it will be +R800.Where will I get that money from.I want that lady who sold me a wrong item to pay for it and this is not the first time Vodacom does this.