Chevrolet Matiz when making a right turn there is a scrapping sound when i hit accelerator had it into arnold clark 4 times they can hear it but cant find fault

That's bad when they can hear noise and cant find the cause after 4 tries. If coming from front check for wear / movement at front wheels , check front wheel bearings , check for sticking brake pads , check nothing rubbing on brake back plate .Could also try another garage rather than A Clarks .