DATES CHANGES ON MY BOOKING

I did and online booking last wednesday for a hotel in Durban on the Expedia website. When I received the confirmation via email I noticed the dates were changed and I immediatly tried calling their offices on *** but the phone is just engaged. I have dropped them email stating that I need this cancelled because of the wrong dates and I want my account to be credited. I just do not get any response. I tried getting hold of the via Road Lodge Umhlanga but still no response. <br> <br> I urgently need you help getting a hold of these people, have my reservation cancelled and my account credited.<br> <br> Regards<br> Naresh