Pro Flowers spoke to a Brenda! Hidden costs which is not displayed during the order! internet? Internet

In Pro Flowers ad on the internet, they did NOT have the total cost of the order, which I did not know until I checked my bank account and saw that PF had deducted more than TWICE the amount that I thought I agreed upon.  ($31.99 the original cost of the flowers and withdrawn from my bank was $65.68!!) I called PF within 5 minutes of the online order and talked to a Brenda and she originally said that it was too late to cancel.  I said "What?" and threatened to go down to my bank and cancel it ane then after while she said that she was able to cancel my order and when I asked about credit for my cancelled order, she was very vague and kind of implied that I would receive a credit!!??  They way she sounded, I'm not sure of receiving that credit!