Insane increase without any communication

I took a sim last year October for data... I was told that I would be paying R199 all along I've been paying that amount. On the 23rd of Feb I get an email advising that they will be taking R345 from my account... I decided to chat to an agent via FB who couldn't give me a reason asto why am I being debited that amount, as I'm still waiting for feedback I get another response from another agent ask me how I know it was another agent,I actually saw the initials... The other agent adv that it was an increase. To my surprise when I was told that it was an increase i rep**** to the agent telling the agent that the increase is so insane it could've increased with less than 30 bucks.... When I decided to investigate that stupid increase I was told that nor one of the agents decide to increase my usage... Tell me why was my spend usage increased without my consent?

I did not put in any request so I will not be paying that amount coz that means that you guys are compromising my other debit orders because of ur stupid and *********** agents who needs to go back to training... finances are not something to play with....Now I'm getting an email telling me that I will be handed over if I don't make the payment, guess what I will not ne making that payment of R345 as my monthly installment is R199... if it comes to a push I will be reaching out to my legal team...I have requested for an investigation regarding my situation even now nobody has reached out..... you guys are not taking your customers serious and you think that if I get connected from you guys advising that I have to pay R500, I will just make the payment without questioning it? Tell you what I am not dumb

I am still awaiting feedback on my request... if I will not be getting any form of communication from you guys I'm afraid that I will have exhaust all avenues to solve this stupid mess that was created by a dumb agent who thinks people have money to spend without questioning

Yall better fix this mess and return my spend limit to where it was when I took the simcard... I know what I'm talking about and I have all those studip responses I've been getting from the agents.. tell me why ur increase is so high as if I am paying for medical aid?..... they kept on saying that the increase was communicated with me I actually had to filter all mails from MTN but not even one said anything about an increase, only to f8md our that a stupid agent who didn't talk to their TL requesting for training, I mean it's okay to request glfor more training if you feel that you not ready aa yes or even ask.... asking doesn't mean you stupid/ dumb

@MTN you really need to better, honestly.... I also what something inwriting that states all the necessary steps that were taken to solve this problem

Thank you