I wanted to volunteer abroad (teach English) so I found an organization in Argentina who found a placement for me. I paid them a $30 registration fee, and $1000 was due at the beginning of the placement, which included the "program placement," accommodation for one month, and the airport pick-up. I was ill when I was supposed to fly (doctor can verify) and I could not come. On the website FAQ it says that if I cancel within 20 days of the start of the program, I will need to pay 50% of the cost. I did not sign a contract, and I have a legitimate excuse. Am I still obliged to pay them? I was not not be paid, this was a volunteer placement.