HDFC Netsafe facility really provide boon to all of us in many situations such as in which we want to make a secure transaction online or in case we don't have credit card. But in some situation their can occur a problem in which merchant is obliged to refund your entire paid amount because of some defect in the product or due to poor service or whatever might be the situation. But in case we had made that particular purchase from HDFC Netsafe card than we will always be in worry that whether we will be able to get refund or not because Netsafe card is one time use only and after that it get expired. Than answer to this question is YES.