City Of Frostproof issued the following announcement on Mar. 07.
Due to a global issue affecting current pay-by-phone numbers, we have had to change the phone number you call to pay your City Utility (Water) Bill. The new pay-by-phone number is 844-592-1746.
You can use this number right away to make payments. You will still need to use your Web I.D. number found on your water bill when calling to pay. We appreciate your patience as we have had to deal with matter.
Original source can be found here.