You can ask the issuer for a duplicate ... OR ... get an income transcript from the IRS.
https://www.irs.gov/Individuals/Get-Transcript
TurboTax does not have actual copies of your 1099C. But if you typed in or imported those documents, your program will have worksheets that contain all the info on the original document.
In the forms mode (in desktop/cd versions of TurboTax), scroll down the forms list and look for 1099-C worksheets (with the name of the issuing company)
