The most obvious question is did your guitar buzz like this before it went to the shop? If the answer is yes, take it back and ask them to fix it. In the future please include in your post info like, I got X, Y, & Z done at the shop and now my guitar does X..... that helps us out, we get alot of folks that like to leave out the fine details like, I dropped my guitar off a tall building, and when I play in a room with 15 computer monitors it makes a strange noise, those little details are sometimes important :) .............