I would guess they are trying to have everyone included, Some people work during the week, and maybe might be too tired to bother to use the free offers, so they send them sometimes on weekends when they might be free to use them. I guess it is good marketing, to try to cover everyone. I did the survey recently and I was surprised that they called me about it, I wasn't home so they left a couple messages. I said my piece so I guess I have no more to say to them... for now anyway.
John
[Non-text portions of this message have been removed]