Goods out of stock and no refund for over a month

I purchased some items from boardmans online on the 21st of april, There was one item on the list that was out of stock but not indicated on the website.<br> The delivery was made without the item. I called the on line team several times to ask for my refund as well as emailed customers services, they apologised but have done nothing to date. I am still waiting for my refund.<br> What poor service! I am so disappointed and do not recommend that people use this service as one would experience the same difficulty in getting a response as I am experiencing at the moment.