If you want to keep your home after falling behind on your mortgage, your goal should be to find a solution, such as a loan modification, that will return your loan to “normal servicing” and allow you to avoid foreclosure.
What Is Loan Servicing
Loan servicing is the process by which a company collects money from a borrower and manages their loan. Your mortgage loan servicer is the company you send your mortgage payments to. They're like an accounts receivable department that collects your payments and distributes the funds to the investor that owns your loan, collecting a fee for themselves in the process.
You have no say in who services your mortgage, and servicing rights can transfer. One month you're making mortgage payments to Cenlar, the next it's to Ocwen. If you don't like it, too bad. You have no say in the matter.