Hello, new customer. I received my first e-bill, and what I am suppose to pay ($18+tax) turned into a $41.13 bill. I am on the 100 Canada-wide plan. There was a deal that i received $10 off my first 6 months. I bought my own phone, and only had to purchase a sim card. I didn't go over any of my minutes or anything. Why am I suppose to pay $41 for my fist payment?