Bad service

I have handed in my chainsaw TWICE now at Brackengate branch. The first time they said it is fixed - I paid R700 just to have it still not working. I phoned Ryobi myself and they said they never fixed the machine. I sent it in again 3 weeks ago and every day I phone they tell me they will phone me back and I hear nothing. I need a new machine - I will not pay for it to be fixed again. I did not use it the first time they "fixed" it, only a week or so later, and still did not work. I am not waiting anymore.