hi ya, iv got a 172 and had cambelt done few weeks ago, since it was done it made a noise i took it back and they just said the belt was to tight but would be ok, then on xmas day the car broke down so i got the car taken back to renault, they said they think it was the tensioner had gone, but today they rung me up and said a valve has broken up and gone into the head damaging the head so i need new head and valves, they have quoted me £2100 to £2400!! is this too much? anyone no what i should do? also im not sure where i stand with do i have to pay them for the work they have done so far also willl i have to pay for the courtesy car they gave me? please help!!!!!!!!