How do you know if Koodo support has received your email?

 I sent an email to them because I had details I didn't want to share online.

I had a lot of strange data activity on my phone. In a span of say 15 minutes my data allotment was practically used up. I was driving and not using my phone. This has never happened to me before and I've been a customer for about 1 1/2 years. 

I'm using a Samsung Note 2. 

I called on Tuesday and was told there was a glitch in the system and that I won't be charged for the overage (currently at $25). But I logged in today and saw the overage fee tacked on.

To complicate things further, I have no way of knowing how much data I'm really using. Since the online system and #123 say the same thing. This is very  frustrating. 

I sent an email on Thursday as a follow up. But I didn't receive an auto reply... not sure if Koodo has one?

Thanks,
B