Repairs lasted a week. Now giving me the runaround

Defy fridge no longer getting cold. Recommendation to replace motor. Paid deposit, one week later came to install motor and paid balance of R1950 invoice. One week after repairs fridge stops getting cold. That was around the 22nd of May 2015. I've made numerous phonecalls. He made several appointments and just didn't pitch. Still waiting, now when I phone voice recording states that he is not available and no message service available! Think I was ripped off here!!!! No responsibillity or concept of service, never mind good service.