My car was sitting 2 weeks when I was travelling. After I came back the tyres gave me grinding noise.?

My car was sitting 2 weeks when I was travelling. After I came back the tyres gave me grinding noise. The grinding noise ws reduced after a week but I could still feel the vibration when I would brake. i took my car to Bernadi, Framingham. They diagnosed and said the brake pads and front rotors need to replaced. They did that and charged me $412( maintanence check+rotor and front break pads changed). Its a 2008 toyota camry LE. The problem is I still feel the vibration. I called them and he said yes because the rear brakes also need 2 be worked but they look pretty okay but those are aftermarket parts and not toyota so he wont touch them.He also said-You need to talk to your salesperson. Its a certified totoya. But I dont understand - if I still feel the same vibration then what did they do. I dont know what to do?Please help