Unresolved online purchase issue

I have ordered products from Boardmans via their online store and received the incorrect product. On 9 Jan 2015 I sent an email, explaining the situation & asking about returns. <br> Boardmans was quick to respond on the following day - promising collection of the incorrect goods & delivery of the correct ones. The incorrect products were eventually collected by couriers, but since then I have sent email upon email, with no action from Boardmans' side. I have had 2 calls from the courier company to confirm that the products had in actual fact been collected, but Boardmans had not done anything to either deliver the correct product or refund me. The last email was sent 2 days ago, with an auto-reply from Boardmans that I will be contacted within 24 hours - which has not happened.<br> This is really incredibly frustrating!