Who called from 4153254768

I got a call from this number saying, in the voicemail, "You can wait forever" ._. i have no clue who set me up for this but i got it earlyyyyyy in the morning and i was like 'wtf'
I think it shud be controlled to where you have to confirm the call by txt or something

called twice today... when I answered it said I could press 3 if I did not request this call... supposidly that's supposed to stop it.

Found this on the companies website: http://wakerupper.com/faq#faq_1.7.
1.7. How do you stop prank calls?
"Wakerupper users are initially given the benefit of the doubt in that they are allowed to schedule calls to any number - as with regular fixed and mobile telephone services. However, unlike a regular telephone, if the recipient of a Wakerupper call indicates that they want to block further calls, the user who scheduled the call(s) is locked out of the system, and all calls scheduled by that user are cancelled. So, while Wakerupper is initially permissive, it takes a zero-tolerance approach to abuse of the service. "

I guess I'll have to answer and press three a few times to lock out all the pranksters?

here's the link for the opt-out page: http://wakerupper.com/opt_out

This is a wakeup call website. I found it and pranked a friend who's been signing me up to receive spam.

Yes- it's true. if you got a wakeup call from this site and you didn't schedule it, someone did for you.  Take heed, there's more coming.