The quickest way to stop it is to come to a resolution with your bank about a payment schedule. Have you tried to do this yet?
You should be receiving a ton of mail from mortgage companies offering to refinance you. If you haven't you can look into it yourself. Please let me know if this is obvious and you've already done this.
There are mortgage companies that specialize in this and get you refinanced quickly, if you have decent credit (besides the obvious house payment issue).
Did you have a loan with an adjustable rate mortgage that just went up, so that the payments became too expensive for you guys to pay? That is what is happening to a lot pf people right now, and I know the government (Federal government) is looking into helping people in this situation.
Please let me know if you have any questions about this post. Good luck.