Mondo Cellphone Contract Cancellation

I'm so ****ed off at this company. I took a contract for a samsung Galaxy A32 for R329 a month for 24months. I never received my statements to check whats going on. I got over billed for how many months, just to find out the contract I signed up for was for 36months which I did not consent to. They investigated on their side and found that they are the guilty party. I was told if I cancel the contract they will be liable for the cancellation fees. The phone was collected 28 September 2022. I had to phone after Mondo constantly to track the process of the cancellation. The lady who assisted me said the cancellation request was successfully submitted to MTN, just to find out a month later that she got fired and my application for cancellation was never submitted. I'm still paying for that phone. I followed up 2 weeks ago and the cancellation process is now completed. MTN sent me a sms saying they will debit R12 551 from my bank account. Mondo you are liable for these fees. You owe me money and I want every cent back. I just got off the phone with a lady called Bongi, she dropped the phone in my ear. Your service is really bad.