Whilst having some major electrical work done, which finished today, the electrician has damaged my kitchen solid granite worktop. He didn't confess to the damage, we didn't see it until this evening. It's a one inch chunk missing which looks like something was dropped on it, possibly a heavy drill or drill bit where he was working in a tall cupboard above it. It's in an awkward spot on the edge of the sink so will be difficult to repair. We've not been billed yet so haven't paid anything except an initial deposit.
What should I do about compensation or getting it put right? It's a national company and the work wasnt fitting a new kitchen. I'm cheesed off because the company has messed us around months, and now this. How do I prove that they've done it when we didn't spot the damage until this evening?