 The new movie Thelma starts with this scam phone call. And the target is a 93-year-old grandmother who loses $10,000. But here's the twist. When the law fails her, when everybody looks at her with pity, Thelma puts on her hearing aid, hops on her scooter, and goes to get revenge. When she sets her mind to something, there's no stopping her. I'm Thelma. Thelma Post. You might recognize me.