Bad old equipment and bad customer service (no customer service)

Terrible service in this branch in cape town cbd. Hired a 150mm orbital sander which I have used many times before and when I started sanding it was fine for 2 mins, then whenever I put any pressure on it it stopped. Tried it several times but didnt work so my guy took it back as they wouldn't collect it, they turned it on an said it works so no refund but didn't try sand anything with it. I phoned them and told them as soon as someone else hires it they will jahve same problem, still refused to refund even though it didnt work and didnt use it. Said someone would call me but as usual with companies like this no one called me back. Not worth persuing over R150 but why lose a regular customer over that when coastal hire os over the road.