Newton Autos Limited

Please be very wary buying a car here. I have now changed my initial opinion of them. I brought an Astra in August. I paid £3500. Took it to my garage in September "didn't feel right". I had to have new master cylinder. Went back to Newton Autos to ask if they could pay towards bill as I'd only had car 1 month. They said they'd look into it and let me know? I never heard from them. I went back yesterday because I need to change the car. I have limited mobility in my leg and the car is really uncomfortable to drive on long journeys. My intention was to to see what they would offer me part exchange (bearing in mind I'd only had the car 8 weeks) and perhaps buy another more suitable car. I was offered maximum £1500. I was disgusted. How can any car lose 60% depreciation in 8 weeks? Especially a car that they sold me? I wouldn't mind but they gave me £300 for my car when I brought the Astra, that is now up for sale for £2000. Be very careful as I would hate anyone to go through this.