I got a bunch of mortgage documentation for another person with my name (i assume they either are a 1-t brett (or a misheard brent, brad or brit) or their email

I got a bunch of mortgage documentation for another person with my name (i assume they either are a 1-t brett (or a misheard brent, brad or brit) or their email contains their middle initial or someone misheard their last name over the phone ( there are several spellings for my last name that are more or less homophones ).. either way I now have enough information to easily steal their identity. I feel like most, majorish, online services do email verification, but when you are giving your email address to a someone over the phone, that's where most of the problems start.