<prompt> Human: I was involuntarily bumped off a TAM international flight late 2015 and demanded to know my rights. My rights were not provided to me. I had to accept a hotel but wrote in the accepting compensation form that I was not accepting compensation vouchers and did not give up claims. After the flight, I wrote to the airline asking about my FTA rights and got no reply. After 15 business days to reply their policy had passed, I requested a charge-back from my credit card company and got no response or challenge from TAM.Fast forward 6 months, ExpediaOrbitz booking agent call back and ask me to pay. I forwarded them TAMs nonresponse and insisted I was not liable. They conceded in writing. I didnt even ask TAM to pay me what they were fully liable for, just didnt want to pay for the flight.Fast forward 12 months, ExpediaOrbitz sold my debt to a debt collection agency just as I am about to finance my first home. I just dont want this happening to someone else and it really hurts me to think how these things mess people up for life. SCREW THESE BUSINESS PRACTICES. GAWWHHHIve already written to the debt collector to them to justify the debt within the 30-day range and I have good records of everything written down. Thanks, REDDIT and sorry for the rant. But seriously, what can I do? This nonsense needs to end for everyone. How?  <response>: Well, the good news is that you knew how to cover yourself, and it sounds like you did. 