Our refund policy can be found in our terms and conditions (Item 10) and is also written on each voucher:

You may cancel your purchase of any Deal within seven working days following the date on which we have issued the corresponding Voucher to you, provided always that delivery of the relevant services under the Deal has not yet begun (i.e. the Voucher has not been redeemed). A working day for these purposes is any day that is not a Saturday, Sunday or a public holiday in England. To exercise your right of cancellation, please call us on 0800 014 8431 or email us at uk.help@livingsocial.co.uk. Provided your call is taken and/or email is received within the seven working day period, and the Voucher has not been redeemed, we will be happy to issue a refund for the price you had paid for the Voucher. After seven working days, or after redemption (if sooner), we do not provide refunds except that for unredeemed Vouchers we will provide a refund if you are unable to redeem it before the applicable expiration of the Voucher because the relevant Merchant has gone out of business.