Hi jo, and welcome to the forum!
1.) I'd call the mortgage company and request that they report to all 3 CRA's. The credit reporting agency doesn't come into play here.
2.) Unfortunately, you will have to buy new FICO scores. That's the way it works.
And if you are successful in getting the mort.co. to report to the other CRA's you need to allow the mort.co. enough time to start reporting. Sometimes it can take up to 60 days for it to start reporting.