(Main number has) SC UNL + 7GB HS + unRadio for $30.00
(line 2 has) AAL SC N.America UNL TT+D for $10.00 and SC UNL + 7GB HS + unRadio for $30.00
(3rd line has) SC UNL + 7GB HS + unRadio for $30.00...
so my question is why does one line have an additional $10.00 billing? all 3 lines are on the same plan under one account owner and all 3 are the same Iphone 6.
I'd suggest contacting T-Force via Social Media to explain your bill -- Contact Us
However, with me just guessing, here's what is happening:
What you're calling Lines 1 and 3 are the "base" of a Family Plan. You probably have a charge on your bill for like $70 or $80 for this.
What you're calling Line 2 is the "Add-a-line" of the Family plan. That's $10.
The $30 on each line is the additional data per line.
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