Poor Customer experience

I should have read more about this company here before going to my nightmare. At the beginning of this i saw a red 2016 Hyundai Tucson advertised by ALM, the number to be contacted was for Andre Louw. As it was on Sunday i send him a whatsapp message saying i was interested in the car, the next day i recieved after insisting a response from him that Peter will help me. I went there to view to car and was told that the car was in good condition and that it was a bank repossessed car. I checked and left to come the next day with my husband to also have look, we trusted them and make a deposit that day to secure the car and come back few days for collection cause we were paying cash. When we came to collect the car everything seems to be fine but when i parked in my house just let than an hours after the car started showing an engine light. I contacted Peter and he said it was nothing and the car just need to be reset. I went back there after 2 days and they brought me to their mechanic to help but he just reset the car and saying that if the light came back then i should let Peter know so that the can order a part that is faulty. That was nothing yet, on my way back home the car started to slow down and there was no power anymore but i tried to get home and park then contacted peter to let him know that the light was back and the car not performing well. The next day i drove back again but no one help saying it was Saturday. On Monday i went there upset saying that the have to fix my car before i leave. I don't know what they did that day but the car was right and performing better. I then drive home and park. On Tuesday morning i woke up to drop my baby at school but the car doesn't start. I firstly thought a was the battery but i made a plan to drop my baby first and then contacted Peter again after. He responded faster and instead of bringing a mechanic with him, he came alone saying he was thinking of the battery but it is not. I didn't do anything to car but they keep on giving stories after srories i just want the car i bought in cash to run for what i did. If you can't help refund my money and i will find another dealer.