Why is the data usage counter completely wrong sometimes?

[Askingq1]

Today, I received a text saying I've used 95% of my data this month (my plan cycle started 2 days ago). I check on the public mobile app & website, it says I've only used 10% of my data (updated after I received the text msg).

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Another issue is when I checked my data last month, it showed I used like 40%. Then later, next day, it showed I used like 30% which doesn't make any sense.

[Dunkman]

@Askingq1 

Several customers with the same complaint. It looks like many customers got the erroneous text on their plan renewal.  Ignore, the text.  PM is working on a fix. 

[hairbag1]

@Askingq1 

for accurate info, log in to your account using the app, click Usage Breakdown. These types of glitches happen "occasionally".