Pinkfootsie
It is a pity that you asked for a revision rather than a refund. Maybe you should tell them that you no longer require a revision and require a refund instead. As per their refund policy:
"In case of any dissatisfaction from any product or service provided by The Essay, you can submit a refund request within five days of your order completion. However, it shall be assumed between both parties that you are satisfied with your order if a refund request is not received within five days."
If they misunderstood the brief (rather than you giving them an unclear brief) they should at least offer a full or partial refund.