billing date changed

[#1]

Has anyone else noticed that their billing date has crept up to earlier in the month?  I get paid mid month, and lately have been getting late fees on my phone bill until I realized that they changed my bill due date.  I have contacted them , but am not very optomistic.  Been considering just going to another carrier.  They are extremly difficult to deal with. 

[#2]

The only way to change the billing date is to change your phone number. The billing due date is based off the last 4 digits of your phone number.

[#3]

Date changing is bad enough.....BUT I have several bills due in the SAME month!

In this month - MAY 2011 -  I had bills due on 5/2 and 5/31.

This is not right - shape up your billing system........................... BigJohn