Dishonest and bad service

I have signed a contract that ended in 2022. They said due to some previous contract in 2019 also a 24 month contract i can only cancel my contract in 2023... 29 months after i signed it as there is a previous contract from 2019. A lady from the query department sent an sms saying 108.997 must be paied for 5 months. I ask to get a settlement amount but the one they send is for 319 rand a month. I want to cancel my contract but you lie to me put the phone down when i give facts and can not provide the documentation i ask for. I did pay an amount of 109 extra for 5 months form 2020 to 2021 but now looks like you dont seem to see it but my bank statement has this. You are dishonest and trying to be **********