Yep I did no joy there.Did you check if he's a member of MLA?
http://www.locksmiths.co.uk/faq/complaining-about-a-locksmith/
I spoke to Citizens advice and they advised me he could be in breach of the consumer rights act 2015 under the 'reasonable price' clause. Basically says that if no price was agreed then any goods/service has to be of reasonable price. so ill get some quotes and compare and then send him a letter.