There are several possibilities
a) Your new bill may have been issued before payment was received,
b) You may not have received your previous bill to be paid, or
c) If you are looking at your bill online the website where we show bill payment activity is not a live site - not online directly with our billing system software. This site only gets updated once per month when your bill is printed. The site does not calculate any balances due or paid. If you paid your bill each month on the payment site, you will see your payment history on the Account Summary Page. If you pay your bill through your bank, our telephone voice system, by mail, or in our office, you will not see your payment on the site. You will see your payment on the next monthly bill only.
However, if you call the voice line (561) 741-2300 you can get up to date account information 24/7.