This dates back several years ago when I locked myself out of my Cisco account and was trying to do a password reset. The following is a summary of the email back and forth across a little over a week.
Me: I'm trying to do a password reset but I'm not getting the email.
Cisco: We sent an email to ********@gmail.com. We'll send another.
Me: My email is ********a@gmail.com, not ********@gmail.com.
Cisco: Sorry for the confusion, we'll send an email to ********@gmail.com
Me: As I said, that's not my email address, please stop sending emails to it.
Cisco: Sorry for the confusion, we're sending an email to ********@gmail.com
Me: ARE YOU FREAKING KIDDING ME?
In the end, I had to create a new account and move my certification profile over to it. Surprisingly, this same guy somehow managed to get that done correctly.