OK jojo p1971 I know how you feel i myself bought a brand new car and had numerous problems with it, how frustrating? So there is a action pack called (consumer action pack) its an easy guide to help you solve your consumer problems this tells you your rights, goods, and services, the law, bought on credit HP, trader rights, what way to go about sorting out the problems you are having, This is the number you will need 0845 600 62 62 and tell these people the problems your are having which they will give you brilliant advice over the phone straight away, and ask them for their action pack ,or go on their website address www.consumerline.org oh one more thing jojo p 1971 don't be soft from my personal experience car sales people think their better than the avarage all because they wear a suit,these people will tell you it's the HP or finance companys problem if so phone the HP company and tell them your problems but not before you find out your consumer rights.
jojo i hope this helps
and good luck.