I had a XXXX XXXX in XXXX 2013. I had no medical coverage so I applied for grant coverage for the hospital bill. I had outside bills such as the doctor, XXXX and XXXX. I paid the bill of {$1700.00} to the XXXX. I called the phone # given to me from the collection dept. When I called that number they said they could not look me up XXXX the bill is sent to collections but if I wanted to backtrack to call the hospital. I did that but only got the answering machine and left a message. I have not heard back from them yet. Another issue is I have moved XXXX since the time of XXXX and have left forwarding addresses. I never received a bill or letter stating I owe this amount and why. I am signed up with Credit Karma and they alerted me by email that there is unfavorable activity on my credit report. That is how I found out it was Chapman Financial who turned me over to collections. I looked up their phone # online and called them. I just received a letter for the collections yesterday. What is the best way to dispute this and get it off my credit report?