Useless business and *********** accounting staff!!

I honestly don't know how you are doing business!! Your accounting department doesnt now how to bill properly!! This whole year I had to query my account and you are still charging me DOUBLE the amount of data I use!! Empty promises of escalating or are you guys just that ***********!! I have even told you on a previous review that my Oct bill was doubled and you just ignored it! How useless can you be!!