Bad Service Agoda

I made a booking through agoda on the 20th of August 2018 but i was sent an email that the booking i was attempted to make recently was not completed due an unexpected system error. As a result, i did not receive a booking confirmation.No booking was made. Therefore they sent me an email stating that they have requested their bank to process a reversal for the amount that was pre authorized on my debit card. I have trying to send them email to ask for the fund but they are not responding to my email and i have not recieved my money back.