Ponteo

You should probably let them know in advance.
 
Either call them or shoot them an E-mail. 
 
Worst case scenario they'll tell you; you can't.

Whether or not it's legal depends on the laws and court practices in your state.
 
If I had to guess, I would say it's legal. 
Your parents most likely singned a contract when they ordered internet from Cox, and my bet is that that contract has a clause in it about changes to their services, 
Basically, Cox can probably make changes to their services without breaking your contract, so no, they haven't done anything you can sue them for.
 
If I were you I would read through the contract to see if such a clause is in there, and if there is, see if there is any vagueness to it or any potential loopholes.
There most likely isn't any of those things, since lawyers are paid quite hansomely to make those contracts.

I like Drawing, whether it be traditional or digital! 

I don't know. 
 
I think it comes down to how people choose to spend their time. 

Looks Good!
 
What's annoying about it?

Dang! that's so inconvenient!