And to go a step beyond Math Geek's and Belphegore's excellent responses it may be time for you to seek some sort of credit or financial counseling if you are truly unable to pay the bill(s).
Do not know where you live or your overall situation but it is best, no matter what, to face up to the problem and start working on resolving it.
Otherwise any resolutions to your benefit will be much more difficult. Address the problems now or they will get worse.