My wife worked selling cell phones for a while. Apparently there are a huge number of older people who don’t understand that just because they put the email on the form that doesn’t mean they own the email address.
It's not just old people, many people who aren't techies think that entering an email address into a Telco form means they're ASKING for that email address. I get multiple emails per day for all sorts of services from all over the world because I was an early Gmail user with a short account name. Most are people signing up to new phone/internet/etc services and they have my name as their first or last name.
