Bad Attitude & Bad service

Made a booking and paid. Faxed the proof of payment and called the hotel to confirm if they got it and they did. When I got here around 12am after 700km drive, I was told that they see the payment but who I confirmed with did not process it and my booking was cancelled. I was told there are no more rooms and got checked in, in a stuffy room that I could not even take a shower in. When I went back to complain about the room Sithembiso with his attitude told me its not his problem that the person received might payment did not process it. I must just be happy I can put my head down and they can not refund me cos he has checked me in on that room. Told me not to make noise cos people are sleeping, I must just decide on what I want to do.but getting a refund is not something I will get. I will never, never recommend a person to book here when coming on a vacation. Clearly staff members have no idea what they are doing and worse the attitude!!!! I don't even know how am I going to take a shower as I am writing this, when I called the manager he just said he will investigate it and get back to me.