I used to go to Westway Stockport.
In 07 when my zed was 2 yrs old, I took it to Stockport where I bought it new and serviced it. The rear bumper had warped slightly. The manager promised they would try and repair it but if unsuccessful source me a new one.
Alas after 3 attempts no joy.
They then denied that a new one was offered as the old manager had left and I had nothing in writing.
Not been back since so things could be ok now.
BUT MAKE SURE YOU GET EVERYTHING IN WRITING OR EMAIL