If you didn't pay by credit card or Paypal and so can'[t use that approach, at least write them a seven day letter. I've put a sample on another thread here somewhere, try this in a search engine:
"seven day letter" site:bushcraftuk.com
Most firms will respond to the threat of action under the Small Claims Procedure, if only because you can claim interest and reasonable costs in pursuing the claim such as postage, stationery, ans a *reasonable* amount for your time and trouble. There are strict rules but they're not difficult to follow and there's plenty of advice about it in booklets at the Courts and online.
