Paid one week deposit not received refund

I placed a holding deposit of one weeks rent on an advert but it was then let to anothet tenant. Theyve been slow in answering the money has deducted under Openrent. How do i get it back no one seems to want to know or answer me. Im getting worried now

Hi, i also worry about this …paying in edvance in nowhere… Did you recive it back, please? How OpenRent help you?
Thank you