Knock, knock!!! Hello, is anyone there?

I had made an online booking in February with Indigo Guesthouse for the period of 16 - 18 June.<br> I paid the required 50% deposit in full.<br> On 20 March I emailed them to cancel the above booking.<br> No response.<br> On the 1 April I sent a second email requesting a cancellation.<br> No response.<br> Today I have sent a third email and it is now almost 4 weeks since my initial request.<br> <br> Is anyone there?