Hey guys I recently bought a 2006 Audi A3 Sportback SE 2.0 tdi. It's the BKD engine, has full service history and 162k miles on the clock. When I bought the car from a local garage it came with a towbar. They said they will remove it for free, but I don't think they actually have. The tow 'ball' the thing sticking out from the rear has been removed but I'm not so sure whether they have removed the bits connecting to the chassis. I have attached a photo, so please tell me your thoughts.
Also the timing belt/water pump was due. The garage (who seemed very dodgy) told me that if I buy the parts, they will fit that in free of charge. So I bought the cem belt kit and waterpump and thermostat for around £135 in total from eurocarparts and gave them the parts to fit. How can I ensure that they have actually done the work instead of just stealing my parts?