There is no reason that I can think of as to why you would do anything other than what you did. I'd write to the credit reporting company and dispute it.
I'm going to guess and assume you filed a Chapter 7 case, although you did not provide that information. If you did not enter into a reaffirmation agreement (and, it's probably best that you did not), then the mortgage company has no requirement to report the ongoing payments you're making as "current" on your credit report since technically the debt to them was discharged in your bankruptcy case.
This is a small price to pay for not having any further liability on the debt in the event, for example, that you default on the loan and they foreclose, you will not owe anything further to them, whereas if you had entered into a reaffirmation agreement, you might owe a substantial deficiency balance.
Mark J. Markus, Attorney at Law
Handling exclusively bankruptcy law cases in California since 1991.
http://www.bklaw.com/
bankruptcy blog: http://bklaw.com/bankruptcy-blog/
Follow Me on Twitter: @bklawr
Consumers can use this platform to pose legal questions to real lawyers and receive free insights.
Participating legal professionals get the opportunity to speak directly with people who may need their services, as well as enhance their standing in the Lawyers.com community.