Expedia are ******

I booked a room through expedia while on holiday in Thailand over the festive season. Expedia confirmed my booking sent me an itinerary number and took money out of my account. When I called the hotel to confirm booking they told me that they had no rooms available and I should take it up with expedia. I called expedia immediately, the agent on the phone apologised and told me that I would be refunded. It's three months later...around five calls and 10 emails later of which none have even been responded to. The are just flat out ignoring my requests to be refunded.