2014 VOLVO S60 Seats Problems

MY CAR HAS BEEN AT BERGERON VOLVO FOR ONE MONTH. I HAD TAKEN IT IN DUE TO REAR HEAD REST INTERMITTENTLY NOT STAYING UP. THEY COULD NOT REPRODUCE SO I PICKED CAR UP AND IT DID IT AGAIN I TOOK IT BACK. THEY AGAIN COULD NOT FIND. I WENT IN AND IT DID IT WITH SERVICE MANAGER EXCEPT OTHER SIDE REAR HEADREST. I CALLED TODAY TO CHECK ON AND THEY SAID IT WAS BECAUSE WE HIT IT 5-6 TIMES AND OVERHEATED IMPLYING NOT AN ISSUE. THEY SAID SWITCH WAS GETTING HOT ON DASH AND 1400 TO REPLACE. I TOLD THEM TO REPLACE AS UNDER CERTIFIED WARRANTY. HE THEN AVOIDED REPLACING I TOLD HIM I WOULD PICK UP CAR IF HE WOULD WRITE ON PAPER SAFE TO DRIVE AS I DID NOT WANT IT TO FALL DOWN IN ACCIDENT AND BREAK SOMEONES NECK. HE DECLINED AND SAID HE WOULD CALL VOLVO...