Unhappy customer

I booked for 3 nights stay with the hotel which they charged me R3285 with my family 2 bedroom apartment upon arrival they required an breakage fee of R750 which they said it's refundable when I checked out the caretaker sign off everything as fine and I was told I'll get the deposit in few days. Later after my check out I got a call from them saying I didn't follow rules as they say I left a toilet uncleaned which is a lie then I would not get the refund. It's a **** they are running there and I want them to pay my deposit and stop robbing people with their ridiculous stories. Why must I get my refund after some time when I paid it immediately secondly iam on a holiday booked for that matter and all they tell me is I left toilet uncleaned or something like really.people need to know about this because they won't stop this false advertising. I don't have Thier email address but I booked via booking.com