Listed as IRS/SSA scam, their voicemail picks up. Let’s exploit this! They have a very long limit on the length of message you can leave, so I just play Tunak Tunak (77) until I reach the limit. I think the maximum length of mailbox is set to 5 minutes. When you reach the end, it will ask you to press a key to listen, send or re-record. I’ve been on a loop listening to my “message”, at the 42:05 minutes now. I’ll probably send it for their listening pleasure. Eventually.
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Correction … the mailbox will accept messages up to 7 minutes long. So if you play a recording, it will eventually ask if you’re satisfied with it. Just keep on looping on your recording to ring up the charges.