Forced to use their application

I bought the app on a Sunday evening, the next morning I wanted to cancel the purchase, because I was too hasty and therefore requested a refund. Management said that I can't cancel the service to receive a refund - which inevitably means that this company is forcing me to use their app. This seems to be very poor business design - If somebody has not redeemed (used) any of the vouchers, then they should be eligible for a refund. It is the 21st Century; I'm surprised that this company doesn't make leeway for this - the power of choice taken from you. I would suggest that you choose wisely if you want this app and if you will make full use of it!