<prompt> Human: Hello everyone,As the title says, my Dad received his bill from his provider, and it is said he used 35G of download on the 20th of May. This brought the total bill up to 3.5k. On that said day, my dad stayed home and the tablet was using the home Wifi, and even then, he barely used it. I am not entirely sure if I am in the right subreddit, but I was wondering if he had any rights in this matter, as it seems like it is clearly an error.Thank you in advance for your time,And I apologize on behalf of my bad english.Edit: Holy, this exploded. Thank you so much for the help, it is greatly appreciated. Ok, a couple of precision, especially concerning the top answer concerning the CRTC s Wireless Code by udwsr. The data provider replied saying that apparently, notification was sent upon exceeding the limit, and it has been approved. Dad has no recollection of such thing, as he barely used his tablet that day. This is truly fed up.Edit 2 : Internet Provider is Videotron  <response>: I got a similar notification different provider that I had exceeded my data usage partway through the month, though I knew it was not possible. Put in a call to TELUS and they said it was an error on their end so they put a note on my account that I should be billed the regular monthly amount with no overage until the problem was fixed on their end. Have not gotten the bill yet but sounds like this is a plausible explanation for you, too. 