Got a phone from Koodo 2 days ago on $150 tab with a $50.gift card. I've used more than 30 minutes of talk time but realized I don't want the service/Koodo so I can't return it. If I call to cancel, how much is my final bill going to be? $150 tab plus the 2 days of using Koodo? What about the.gift card amount, do I need to pay the $50 back as well?