How long does Chex Systems (BOA) take to update their system with new SSN ?

I was recently denied by BOA to open a mychecking account. On visiting their branch 3 times, I was informed that the system that they use “chex systems” is denying the process saying that " My ssn has not been activated. I have a Social security card and a letter from SSN office stating that my SSN is valid from OCT 1st 2012. Can someone please let me know that how long it takes for chex systems to update their system with my new SSN ? Anyone with similar experience please share. Thanks.