Just noticed that my bill for monthly is now $40 instead of $30 (excl tax). Started in Jan 2018. This is a large hike and I can't find any notification. Is there not an obligation to notify?
Also, the plan name may not have changed: if I compare all months using the "download bill" link, they all say "Mobile Services," not a specific plan name. The name "40 1GB 500 Min Plan SFD" was only visible because I was looking at the html display of my current charges, instead of the formatted bill.