We all get more bills per month than we want to think about but do not just ignore them. You should, or perhaps need to, look at each one, especially if you are running a tight budget. Errors happen more than you think, even with automated billing. Also by reviewing each of your bills, you may find opportunities to save money.
Most bills increase year over year due to some charge or tax, but if you do not understand do not just assume they are normal, pick up the phone and call! Engaging the company may also allow you to get a promotional rate and save you money. One example of this is your cable provider. These companies often run special rates that they do not offer to current customers unless they call and ask.