Frankly I feel that it's probably a bot. I don't know if there's a real Katie Chamberlain or whether they have simply picked some name out of the blue and I can't see what it has to do with smile cloud services
Anyway, here's the recording of an unsolicited call.
call_16-52-49_IN_01130859953.mp3
Internet searches seem to show that this is not an isolated case.
If anyone has further information as to how it works then please post it here.
This call was recorded automatically on an android mobile phone.
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