Voicemail and Minutes on $30 100 Min Plan

[acadiel]

Hey folks -

I have an unlocked iPhone 4S on the $30/100 min plan, and it's been working well.

My only pet peeve is how it appears minutes are being deducted when:

1) I don't pick up and someone leaves me a voicemail
2) I call my own number from a landline, hit * and put in my code to listen to voicemails

Is this normal behavior on this plan? I've never been deducted minutes for people leaving me a voicemail (because I didn't pick up the phone) nor for retrieving voicemails from a landline.

This is a newly activated (around 30 days ago) SIM purchased directly from T-Mobile.com.

And yes, I've compared both before and after on my account after doing each one of these activities (both 1 and 2), and the minutes are being deducted.

Thanks!

[ja5219]

Very odd, I just did both things above with my phone and my minutes remained the same. 40 left for the month.
I don't have a suggestion on what to do but i was just posting here to see if I could recreate the problem. My phone is the Exhibit II and I am also on the 100 mins plan.