If you paid a deposit you legally have 7 days to get your money back in the UK
If you want to go to a legitimate acting school in the UK that might actually get you somewhere, then go somewhere that's recognised in the industry such as Sylvia Young, Stagecoach, National Youth Theatre, etc.; I would not bother with a school that nobody I know in the industry has ever even heard of
Sylvia Young is one of the top drama schools in the UK and charges £99 per a 10 week course meeting every Saturday. So for 20 weeks meeting 4x a month is £198
Here is a Wikipedia page listing just some of their famous alumni
Stagecoach Theatre Arts is another repubable school and charges £318 for a 12 week course meeting once a week for 3 hours per course
Here are some famous Stagecoach Theatre Arts Alumni
Celebrity Talent Academy doesn't seem to have a Wikipedia page with their famous alumni
Almost every drama school in the UK for kids/teens costs a heck of a lot £3500 for a 20 week course.