i would like to have my money i wish sum one could help me

i booked a holiday with agoda for 4 nights for 4 people which cost me R9432,00 and it was a mistake i wanted to book 4night 4 1 person so when i tried to rectify the mistake they wouldnt want to help me because i have already cancelled that reservation and they said its non-refundable and i cannot modify it also.i SEND THEM AN EMAIL AND THEY EXPLAIN TO ME that the hotel doesnt want to rectify because of this policy but they send me an email stating that MY ROOM IS STIL AVAILABLE IF I WANT TO DO RESERVATION...to my suprise when i tried to do the reservation they said i must pay again...ok i said its fine i can just take the first reservation for 4 people but still they said no it is cancelled...so i called trying to seek clarity because they said my room is still available and the person i found said that That email they send me was a MISTAKE thats why they send me the second email saying its non refundable..so i said if they can make a mistake why cant I we are all human and we make mistakes ..THEN THEY OFFERED ME 10% OF THE MONEY I PAID TO RECTIFY THEIR MISTAKE so i didnt accept their offer because if they can make a mistake why cant i...and why do they want to pay me 10% ..i might as well pay them that 10% and they refund me my money or they must give me my room that is all i was asking am i wrong in doing that?i still have that email with me that states that my room is still available...im frustrated indeed