They have ****** my money - they owe me a refund from May and it is now June

I bought items from homechoice in May. I never took delivery of the items, they were delivered to the wrong address and subsequently returned to the seller the same week. I requested a refund as it was a cash purchase. Since May, they have been giving me the run around and now they are just ignoring my emails and calls and I still do not have my money. It is theft and I have contacted my lawyers to issue a letter of demand as this is unacceptable.