You are able to amend your personal information at any time in the "My Details" section of your Wowcher account which you can access here: https://secure.wowcher.co.uk/login
   
Card details are retained by our trusted payment processor, Cybersource, the first time you make a purchase. You can amend your card details during the checkout of subsequent purchases.   

Alternatively you can contact us via email on cs@dealhelp.co.uk