How does one pay the wrong internet bill, exactly?

Hlmaster Moderated Message:

I had to pay some other bills, so I left my internet bill to the next month, then, I payed the new bill and forgot the old one, now I don't have internet, I'm currently using my cellphone's wi-fi, wich sucks too damn much, only working properly at night. Somehow I managed to log-in during the day today, but I'll have to go, cya. ♥