2003 Toyota Corolla Brake noise corolla

I have recently brought my car to a
shop to get my front brake pads
replaced. After about 2 weeks I
started hearing a scraping sound
whenever I started slowing down. I
brought the car back to the shop and
they said they took the brakes apart,
greased everything and it should be
working now.

Now after another two weeks, I hear
the scraping again. It doesn't scrape
at first, after driving for about 10min
it starts scraping when I slightly hit
the brakes up until I stand still. What could that be?