Bill explanation

I would like an explanation of the charges on my bill.  This month my internet charge went up $5.00 without any explanation.  Also would like to know what the XTRA charge covers as well as what the following charges cover.  TV access fee-2 clients, Advanced receiver charge, Regional Sports Fee, TV access fee.  Also my internet charges cover a Internet 100.  Since I do not use the internet for much more than playing games do I need that program.  I am receiving a $60 monthly credit which will run out in 4 months.  At this time if I cannot lower my bill by approximately 25% I am going to have to cancel my service.  Any help will be appreciated.