[Resolved]  Printvenue — Cancellation of my order

I have ordered some personalised pen drives form printvenue.com at the given discount rates
order no.
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and made the payment through my debit card. Now they are telling me that the discount shown at their website was a technical mistake and they cant proceed with my order and i have given words to the people to give them a pen drive as a new year gift but they told we will cancle your order. what should i do now?