Is there any way I can see my rolling balance?

Is there any way I can see my rolling balance?

I have a GoPhone, prepaid 10 cents/minute, 20 cents/text. After every call or text ATT sends a free message stating, "new balance after recent transaction of 10 or 20 cents."  Recently I'm getting messages from ATT that indicate an balance drop of 60 cents after a 20 cent charge for a text, in one case $1.40 drop. 

I think what might be going on is multiple texts rolled into one Balance Message but I have no way to know for sure and ATT representatives can only say what they see and it's all correct. Forgive me for not trusting them. I can see my history on MyAtt but that's telling me every text at 20 cents and calls at zero, which isn't right either. I want to see the rolling balance for myself and compare it to the Balance Messages that I'm receiving.