In 2002 my son added my wife and i on his two B of A credit cards as "authorized signers". Sometime in the next few years B of A started showing us as "co-borrowers". We have tried many times to get them to take us off or to show us where we signed an Agreement to be co-borrowers but have gotten nowhere. The "assistant" to Kenneth Lewis, CEO of B of A told me that the bank "does not have to keep signatures or signature cards after five years" and that since we are shown on their computer as "co-borrowers" that must be right. Is that right (that they don't have to keep signatures)? My son, who is a banker, says that is not true, and that they must keep the signed Agreement until 5 years after the account is closed, but I seem to recall seeing something on the Bank Secrecy Act that supports what B of A says. What is the story? How can I get our names off of these accounts?