Hello my name is ***** ***** I am happy to help you today. How long ago were you working there and why have they refused to pay you?
Hi you need to write to them to give them 7 days to pay and state that if they don't you will raise a claim for unlawful deduction from salary in the employment tribunal.
You can then, if necessary, submit a claim at www.employmenttribunals.gov.uk
You need to make sure you do so within 3 months of todays date otherwise your claim will be out of time.
If you have any further questions please ask. If I have answered your question I would be grateful if you would take the time to rate my answer. Thank you and all the best.