hi have got insignia sri vxline 2012 spec and have got a problem regarding heater controls the dial that changes heat setting doesnt change both lots of figures example ones on radio settings as well as on heater ones they dont correspond with each other untill you turn fan up has been back to local garage where it came and they havent been able to find the fault just wondered if any one out there had any suggestions but have been told they had another with same fault so bit of a nusasece i think also it doesnt seem to give right heat out now for what it says on screen