Did you ever consider that "The Sign Warehouse" may be a legit, but different company than "Sign Warehouse" with a legit, but different address and phone number.  They have been bought since then and are now in Suwanee.  We do business with them and have for years.

And another today. And there continues to be no removal number/instructions on the fax at all. Just an AOL email address and this number.

Another fax today, same as the first.

A fax for screenprinting prices, claiming to be from "The Sign Warehouse" which is the same name of a firm we actually do business with (but minus the "The"). But the address and phone number do not match, and a call to our legit business partner revealed that the fax is indeed not from them but an impostor.