Block a Number?

[citizenal]

Give you "friend" a call a couple of times at 5:00 am when you get up. I guarantee he'll get the message.

I second this, call him reallly early and text him every hour till 8 in the morning.

 

[Applejuiced]

I second this, call him reallly early and text him every hour till 8 in the morning.

I agree, turn the tables and see how they like it.
Worth a try but also sounds like you need to get some better friends.