car dealer and small claims

[metsta]

ok my last question was toooo long so here is the short version.

i pxd my 5500 car against a 8000 car. there was a fault with the new car that they assured me would be fixed i called the mechanic to check what was done and was happy with the fix, i called a specialist and they advised checking another part as the first is a tell tell sign the the other is on its way, they gaurentee that they have checked and all is good and thdeal is done.

within 3 weeks of owning the car, the steering box has gone and needs replacing, the engine wiring loom complete replacement, the ECU is touch and go and the rocker gasket too. all in the bill will be around 1500 quid excluding ECU....

what are my rights, reject the car and demand full refund, ive contact the dealer several times with no call back or answer that they are willing to pay for repairs