Foreclosure defense scammers generally operate from out of state and promise you results such as modification or other forgiveness of the debt. They may or not be lawyers. They will ask you for a lump sum of money up front and probably tell you to not pay anything. Then when things heat up in the foreclosure case, they do nothing, because they can do nothing, because they are not authorized to do anything in the state courts of Pennsylvania. Whatever you do, do NOT hire an out-of-state law firm or company, based on promises made in mail solicitations to you, or from the Internet.
Further, they may send you some form document to file with the court “on your own.” This is a horrible sign! You should ask for your money back immediately and contact a local lawyer, one authorized, at a minimum, to practice law in the Commonwealth of Pennsylvania.