Thanks JT!
Ok, she finally got a reply from him. He explained that he's been busy (training ha!) and apologises for not being in touch but unfortunately he can't refund her money as it was taken in the previous tax year, he's happy to finish the sessions though (how generous).
The funny thing is that since my gf asked for the lessons and got no shows from him she's trained as a pt and is now more qualified than him (she's always had an interest so it's not like she suddenly learned stuff).
She's off to the gym tonight and is hoping he's there. It's a total piss take as the only reason it's the previous tax year is because he didn't show up to scheduled sessions and then ignored her. After she's given him her opinion I'll post his name, Facebook, phone number, works details and address if I can get it, his life will be a lot easier if he just gives her the £80