I agree that it seems like a lot of work for little reward. However I think you ignored the fact that the OP made multiple calls that lasted over 6 minutes (in

I agree that it seems like a lot of work for little reward. However I think you ignored the fact that the OP made multiple calls that lasted over 6 minutes (in the comments section he also mentioned that the phone numbers he was calling were fairly similar to each other). So $15/hr0.1 hours6 calls = $15. The fact that all of the coordination is done through e-mail means that the scammer could have multiple people per day doing this. Which would add up to a small chunk of change, enough to keep his operation going, especially if business is slow. It is almost like an old-school version of click fraud.