Not impressed!!!!!

Just got my LUMIX LX100 back from repair. It was showing focusing issues and draining the battery when off. Sent it to the only uk Panasonic authorised repair centre. £180, a new circuit board and zoom motor later and it's returned to me. Take a test shot and notice two huge marks... closed the aperture down and shot against my blank wall and, low and behold, two huge hairs and lots of dust spots on the sensor. It's not a removable lens camera, so I can't clean myself. Phoned up to discuss and received a very unsatisfactory response. Queue angry emails and threats of Trading Standards.