No service

My car went into Renew It for hail damage, received car back 5th Feb, the Monday morning when I drove to work I realised when you switch on the car the brights automatically come on and stay on, reported to insurance and they would in turn report it to Renew It, Tuesday the 9th went into Renew It and spoke to service manager. He assured me that he would order the switch and come to my place of work to have it fitted, said fitting time would take half an hour. Tuesday the 16th after having no call back I went in again to Renew It, I spoke to another lady which was going to phone me back yesterday afternoon but no call was received. I phoned this afternoon and particular lady is off sick today and service manager was unavailable to take my call. I asked to speak to anybody else in authority and was put through to workshop manager but was then cut off, I tried to phone back again but phone stayed engaged. I drive at 5.30am in the morning and the other cars on the road do not take lightly to me driving with brights on and every morning I get hectically flashed, I did stress this to Renew It both times I have gone in