Daylight *******

We just moved house after paying full amount for this month. We want to cancel existing line and have them activate a new line where we have moved to. We are told we need to pay again. That's day light *******. The line in the new place is already active but in the old owner's name so we need it changed to ours. We already paid for the month, it's baffling how a company can unapologetically swindle their customers like this.