Auto pedigree don't value customers after purchase!

Bought a car last year May, car arrived with a scratching noise on brakes all the time you break in. Car handed over on Saturday, my husband didn't go to work on Monday, took the car back to them so that they can check what's wrong as they fix anything wrong with the car noticed within 3months of delivery. They checked and said there's nothing wrong, it's the dust that make the noise. October the car was sent to Dekra & the car passed the test in everything while we were still experiencing the scratching noise on breaks. I also asked them that guyz is this car perfect, nothing wrong on the brakes coz there's a noise? They confirm that it might be the dust coz everything is perfect, the car brakes passed the test. We were told to drive with the noise it will eventually disappear, as Auto pedigree said the breaks were new. Now the sound changed from scratching to grinding, we looked for Mechanic only to find that all along the noise was a notice that brake pads are low. Now we have to pay for the damaged cause, which is a lot now. They should have told us straight forward that the brake pads are low, we fix the problem early. In fact this is their problem but they told themselves that they won't fix it coz it's going to be give us severe problems after 3months of purchase. We struggled with money things with Auto pedigree, they don't value their customers after purchase.