Printer ink is not ordered?

And that's when we got my printer when we got the contract or something that I can print about 50 pages per month and whenever the ink is empty the laptop automatically sends the signal to the people and I get the Ink by mail. Now I had thought the ink was empty and changed it, and then when this ink was empty, I had thought I can then take the old again, which then over time, of course, has gone empty. But now we have not received any mail for months. Why is that? And what can I do about it? LG

They are offended now.