LACK OF RESPONSE - POOR SERVICE

I booked tickets for an event and was called to advise the event had been cancelled. I requested a refund for 2 of the tickets and for the other 2 to be moved to another date. I have been trying to get hold of computicket with various calls and emails yet am not being assisted. It is not my fault the event was cancelled i have had no confirmation of the refund in writing nor have i had help to move the dates for the remaining 2 tickets. Calling the call centre they seemed lazy and said i need to talk to the original lady who called me who has still not bothered to answer my mails nor afford me the courtesy of a call. Terrible service from Computicket