Early bills from magazines

Just got a bill from Time Magazine saying my subscription payment was overdue.
 Which is strange because the mailing label on the current magazine says that my subscription doesn't expire until June 2020.  

So - are they so desperate for money that they are harassing readers a year in advance?

I do think that they are the premier news magazine and will continue my subscription, but I'm a bit insulted that they are being so pushy.