I understand your frustration.
I had TWO 15.00 charges for additional data added to my plan, after the first charge I turned one phones data off, and the other two phoned never left the house or was off my Wi-Fi, and all of a sudden two days later I get another additional $15 charge. The rep told me he had no idea how the data was used, then when I told him I was changing carriers all the sudden he could see exactly where the data was used. He said my two phones that were on Wi-Fi switch to 4G somehow at some particular moment because it was moving faster than my Internet in my home, therefore charge me data which made me incur another $15 charge, Its totally bogus and I'm changing carriers
I had TWO 15.00 charges for additional data added to my plan, after the first charge I turned one phones data off, and the other two phoned never left the house or was off my Wi-Fi, and all of a sudden two days later I get another additional $15 charge. The rep told me he had no idea how the data was used, then when I told him I was changing carriers all the sudden he could see exactly where the data was used. He said my two phones that were on Wi-Fi switch to 4G somehow at some particular moment because it was moving faster than my Internet in my home, therefore charge me data which made me incur another $15 charge, Its totally bogus and I'm changing carriers