Habitat for Humanity Mortgage loans not reported to credit bureau?

I bought a home through HFH about a year ago. In order to qualify for this program you have several things you have to do. One being cleaning up your credit report which I did. I have a mortgage payment every month and it is not being reported to ANY of the credit bureau. This is a interest free 20 year mortgage loan. You are not told before you get in the program that is't not reported so my question is, is there anything I can do to have them report this? My credit report is not correct because it shows I do not have a mortgage but I do.