brake noise after doing a brake job on the rear

What is your question?

I did a brake job on my daughters car new roters pads on front.new shoes and had the drums turned.everything was find for two three weeks.started hering noise in rear brakes also you could feel the brakes grabing I took them apart the only thing i founded was bottom spring on left rear was on wrong I changed it to the right place drove the car everything was good. about week later they said they were hering a little noise.If anybody has seen this problem please give me a answer thank you.triump 68