Cash converters montague gardens

As I wrote before about the Yamaha Amp I purchased at cash converters montague gardens, after taking it back they would not refund my money and send it away for repairs. I collected it on Thursday and it is still not working. They tested it there with about 100 wires from different sources and say it is working. There testing is done like a 10 year old scratching around with toys. Absolutely perthetic. I had so sign that I won't come back with the Amp again. All can say is that I would not recommend any one to buy from them. The second Amp we tested the first time that also did not work I see it is back on the shelf for sale, so who ever buys it will have the same problem. Another thing is on my purchase slip there is written 6 month garentee. So be careful with out there with cash converters montague gardens. I must also say that the manager operating there has no understanding of humans.