How do I enter long term capital gain in Turbotax if no 1099 received?

I had an investment with a company for 2.5 years that completed April 2022.  The agreement was total interest payment at the conclusion of the investment.   Without going into great detail, the company paid me $18k in interest at the end of the investment.

 

The company sent me a note for 2022 taxes that stated the following "we are not filing a 1099 with the IRS, but we will be claiming the interest paid out to you"

 

I am uncertain where\how to enter that into Turbotax.  Although it was stated as an interest payment, I'm wondering if it would actually be a long term capital gain.  Since I don't have tax filing paperwork from the company, I'm not sure what to do.

 

Any suggestions?