Can I extend the expiry date on my voucher? If your voucher has expired, unfortunately neither the Seller or MyDeal can extend the expiry date. Expired vouchers are non-refundable. Related articles How do I contact MyDeal customer support? Where can I find my voucher? How to track your delivery once it's dispatched How do I redeem my voucher? Warranty for damaged or faulty item Comments 0 comments Article is closed for comments.