Past due bill with charges that are not accurate. Is this a scam?

I have past due charges and other charges that are not accurate. Now my service is going to be suspended due to none payment and I can’t get any help with this. What do I do? Any suggestions? I do not get paid until Friday for the past due amount and I paid all of my bill that was $304 in Jan now it says I owe $381. What am I supposed to do?