Digi simply deduct my credit

[imzene]

My data plan is expired and I did not top up so I won't be updated with the new data quota right?
But afterwards I keep receive the SMS from digi stated that total usage for today exceeded rm1. However I didn't make any call and I switched off my data.
I sincerely hope that digi could check the record of how many credit been deducted from my balance as I only left rm2.72 but I'm overseas now.
Is it because of my expired data plan?
*Provided with the screenshot of the messages.

[HarveyPuah]

auto renewal?