The big disadvantage that I see with this plan is that when you do this your line will be tied up, and Raquel Welch won't be able to get through when she calls!
if it’s a telemarketer I immediately say “wait just a moment” and then throw the phone under a pillow or in a drawer. You’d be amazed how long some of these people will stay on the line.
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My 3 year old loves to talk on the phone ,, I give him the telemarketer calls...