****med into a contract by lying agent

MTN is my biggest regret in life, i regret the day i answered their call offering me an unlimited Wi-Fi router which turned out to be a lie and MTN's way of ****ming me into a contract. It turned that MTN do not offer unlimited wifi connections but i was given 130G wifi which i am now expected to pay R729 for using what i thought was unlimited connection. They refuse to give me the voice recording 5 months after i requested, they have since handed me over to their lawyers who are threatening me with legal actions. I somehow owe them R6 300 for the wifi which they collected. They failed to address the fact that their agent offered me a product that does not exist. I had to pay for my wifi cause theirs was a **** which i used for about three weeks. I am not a rich auntie who can afford two service providers for the same service. I do not have the R729, i hassle 12 hours a day just to put food on the table for my family. I am asking that your support department provide me with the voice recording as requested