Regrets regrets regrets

What a nightmare Ive heard with this people.who are taking people for a granted. Took a phone worth 8k on the 31st of January 2025. Unbeknown to me that this will end up costing me 18000.. and was told that I should pay 25% deposit which was around 2k of which I did . Few days later I realised that the initial payment is not 25% but it only contributed to 12% . So I decided to take the phone back and terminate contract. After taking the phone back it's been 2 weeks now and I've enquired why I haven't heard anything now I'm being told that phone has scratches I should go back to the shop . they will explain to me what happens next. All I want is to cancel cos I'm not going to pay 18000 for a 8k phone . I see that they want me to take the phone back of which I am not going to do in that .. I have decided to contact he consumer commission regarding this. I DONT WANT YOUR SERVICES ANYMORE AND I CAN'T BE FORCED TO CONTINUE TO PAY ..