2003 Buick Century Front Wheel Bearings

I just changed my front wheel bearings. Before they were making this noise and when ever I went to brake the brakes seem to get stiff for a sec and you hear this sound in the front wheels. Now they were doing this before I changed the bearings which was the problem. I changed them and they were fine for about a week and a half. Now the sound is back and the same problem is going on. What else can I do. I will return these to the parts store becasue I got the warranty on them, and put a new set on. Is there anything else I need to look for besides that. It also does it when I am turning left or right.