Requesting Deposit Back

Arranged new Wooden Wardrobe Doors to be fitted 13/09/21. Joiner put date in diary. Back in June 21.Ask on the 10/09/21 if still okay to fit doors stated on Holiday via text message. Ask what was happening Stated again on Holiday. Therefore getting very annoyed ask for deposit back, by bank transfer which HE greed. Still waiting. Sent text asking were my money is, doesn't answer phone. WHAT ELSE CAN I DO. Have Ref No. of rated people and date posted. Your help would be much appreciated.