depends on how long ago you bought it from dealer as to then changing your car for another one, you might have to pay something towards another one though, as dealers not known for having a heart, but you could make a fuss when they have other customers around, playing your carer/senior citizen card,or tell them you will go to trading standards, as car "not fit for purpous" i hope you did not pay for "repair" last time. you could try auto sparks to see if they can help,other than that not to sure what you can do. Best of Luck.
hope it helps
August 2010