Tyres replaced, brake spring dislodged!

I went in to put two new tyres on the rear. A few days later, I heard a sound emanating from the right rear wheel. This was some distance from home, so I made a stop at a local tyre shop. They said it was my brake pads, so on their advice, I replaced my rear brake pads, which actually still had some life left in them. However, the sound was still there. So I then took the vehicle to a mechanic. They then advised me that the brake lining was disrupted, and the brake spring dislodged upon my tyres being changed. So I can only deduce that when my tyres were fitted, the brake spring was disrupted. I have now had to pay for new brakes, as well as to have the brake spring reset. I would like that this be addressed, as I have now incurred expenses that were no fault of my own.