This one’s new(ish) and insidious, because it can sneak up on even the vigilant.
Let’s say a telemarketing call slips through. (This is happening more and more, in spite of the Do Not Call lists. A rant for another time.) And you have someone all apologetic for “headset trouble” and “Can you hear me now?”
Do not say “Yes” or anything else. Just nope on out of there. Because there is nothing good to come of this.
The caller is trying to elicit a “Yes” to be used out of context in forming what they will claim is a verbal contract. These are enforceable in some states, and that’s why they’re playing all bumbling with their equipment. All they need is that one “Yes” that’s indisputably you to edit in. You agreed they’re audible, but they’ll claim you agreed to pay for something. Even if you say “No, and fuck off” once they’ve offered cruises and time shares and other iffy deals, you may find yourself with an invoice they’ll fight hard to make you pay.
This can get unwrapped, with time, money, possibly lawyers, but in some states, if it sounds like a verbal contract, it may go against you. Then it’s a pay or suffer (more) situation.
Meet all “Can you hear me?” calls with a dial tone and possibly an upraised middle finger.
If it turns out your long lost Great-Aunt Gertrudis was really having trouble with her phone, she’ll call back.