It's Houston Chronicle calling people to subscribe. They don't call everyday it's just every now and then. It's annoying though because I've asked them multiple times that I do not want to subscribe to them and to not call me anymore.
I used to get Houston Chronicle's paper everyday many, many years ago. But technology has (sadly for many companies like the Houston Chronicle) has expanded so much that not many people rely on the newspaper for news.
And this doesn't just go for newspapers... it goes for hard-copy books, music CDs, DVDs, and multiple other things.

They had stopped calling and now I can report a minimum of 5 calls daily. I would never subscribe to the Chronicle because of the harrassement. I'm on the donotcall list but it doesn't seem to stop these calls. What can I do?

Please take my phone number of your list.

Number calls all day everyday
 I want off their list asap, please!

This is the Houston Chronicle