I forgot to cancle my upgrade. today 1 day after the purchase I sent a letter to admins. Do you guys think i'll get a refund?
You being refunded depends on the system in place. If they can easily get access to your order and money then you may be refunded. If you can't get it refunded then remember to cancel it for next month. Depending on your financial situation it shouldn't be too big of a deal.
Usually that's what you do, walker. Even if you cancel it the day after you buy it, you still get it an entire month. Just a tip for next time.