Maximum of 24 hours just to cancel an online order

I'm disappointed regarding the online orders. I placed an order this morning and completed the payment with Payflex. After going through the order I saw the delivery address was not mine and I didn't put it in manually. I sent an email to customer care a few minutes after I placed the order.Later the morning I phoned to ask if they can change my delivery date which was unsuccessful due to security reasons.I was given two options.Option 1 was to collect in store and 2 was to cancel my order.I went with option 2 and they said it can take up to 24 hours just to cancel an order.I asked what happens if they go through with my order before the 24 hour window.The lady on the phone responded that I should click on package not received....so because it can take so long for an online order to be cancelled,your order can automatically just go ahead and your calls and emails trying to cancel doesn't mean anything.In my case,If they follow through with the online order, I've got to wait between 7-14 days for a refund! I'm now forced to make other arrangements for a Christmas gift as I'll never receive it in time.Becareful not to make the same mistake I made regarding the address or you will be doubting to use their online services again.