Ask Slashdot: What To Do About Repeated Internet Overbilling?

An anonymous reader writes "AT&T has been overbilling my account based on overcounting DSL internet usage (they charge in 50 gigabyte units after the first 150). I have been using a Buffalo NFinity Airstation as a managed switch to count all traffic. As you may know, this device runs firmware based on dd-wrt and has hidden telnet functionality, so I am able to load a script to count traffic directly onto the device. I have an auto-scraper that collects the data and saves it on my computer's hard disk every two minutes while the computer is running. While it is not running, the 2 minute counters accumulate in RAM on the device. Power problems are not normally an issue here; and even when they are I can tell it has happened. The upshot of all this is I can measure the exact amount of download bandwidth and a guaranteed overestimate of upload bandwidth in bytes reliably. I have tested this by transferring known amounts of data and can account for every byte counted, including ethernet frame headers. AT&T's billing reporting reports usage by day only, lags two days, and uses some time basis other than midnight. It is also reading in my testing a fairly consistent 14% higher whenever the basis doesn't disturb the test by using too much bandwidth too close to midnight.

AT&T has already refused to attempt to fix the billing meter, and asserts they have tested it and found it correct. Yet they refuse to provide a realtime readout of the counter that would make independent testing trivial. I've been through the agencies (CPUC, FCC, and Weights & Measures) and can't find one that is interested, AT&T will not provide any means for reasonable independent testing of the meter. It is my understanding that if there is a meter and its calibration cannot be checked, there is a violation of the law, yet I can't find an agency that can even accept such a claim (I'm not getting "your claim is meritless", but "we don't handle that"). If indeed they are not overbilling, my claim of no way to verify the meter still stands. My options are running thin here. So that my account can be identified by someone who recognizes the case: 7a6c74964fafd56c61e06abf6c820845cbcd4fc0 (bit commitment).

Comments

DSL Is generally several layers of encapsulation

[silas_moeckel]

PPPoE and ATM add overhead to about 16%.

Yup your paying for the encapsulation that never leaves their network.

Re:DSL paload + ATM = 16%

[bill_mcgonigle]

Most places I've seen measure with encapsulation, because it's easier. The problem's not with the meter, it's with the small print

The problem actually is with the meter, if you're not allowed to see the meter.

"We're going to charge you based on this gas/electric/water/phone meter, but you have no way to verify the reading" is something the PUC wouldn't accept other than in the case of "the Internet".

Re:maybe

[bill_mcgonigle]

I thought everyone knew this, or were able to google it especially if they are able to upload something like DDWRT to their router. Perhaps I had too much faith.

especially in AT&T if nobody he's ever spoken with about the issue knew enough to mention encapsulation. It doesn't sound like he's a dope, just possibly missed this factor. Somebody there could have simply asked him, "are you counting the overhead of PPPoE and ATM?" and then his post may have been entirely different, if it even existed at all.

With millions of home users and thousands of techs, the onus should not be on the customer base to understand how the vendor's product works internally.

Overhead

[DrYak]

Imagine if you went to buy milk and bought a gallon but were charged for 1.25 gallons because of spillage in the bottling plant.

Or to be more similar: you got charged 1.25, because they determine the price by weighting it and thus are also weighting the glass milk bottles and the hard plastic crate carrying them.
And when you ask them why you don't get the same amount of gallons that you measure in your kitchen and on their bill, they just answer "No, everything is okay, our bill is 100% right.". Without ever mentioning that you need to take that overhead into account. Without you having any way to check it or control the milkbottle+crate weighting process neither.