Oh yeah, and just because some business does it does not make it right.
I can't help but want to explore that absolutist statement. Have you ever ordered something at a restaurant and it tasted bad so you had it removed from the bill? Or bought an article of clothing that didn't fit when you got home so you took it back to the store? To me the signature is irrelevant, that is simply a statutory requirement for deals involving real estate (Statute of Frauds). If for whatever reason, you didn't get what you paid for, why is it beneath contempt to exercise the default terms specified in the contract? The dollar amounts are different, but it is the same as refusing to pay a contractor who didn't do the work correctly. A mortgage is not a blood oath before God. It is a contract with a default provision that both parties agree upon.