speakeasy1

Hi all, I've inherited a Lexus IS250 so I had it in for a full service, MOT and had the rear discs and pads changed last night. Looking at the pads they've added, they only seem to cover half the disc of the brake disc. I've attached 2 pictures. You can see that after 30 mile a line on the discs where the pads are touching. Have they fitted incorrect-size pads, which will eventually create disc pitting? Many thanks, D