A Shameless Attempt to Get a Valid Sainsbury's Voucher

I read a newspaper article recently about how someone blogged about poor service at a Tesco which resulted in the company actually addressing the problems.  So I am going to give it a try.  My problem is with Sainsbury's.  Several days ago, I received the bottom voucher shown at left.  I returned to Sainsbury's a few days later and brought it to the information desk.  The staff were very friendly, helpful, understood the problem, and seemed to want to help me.   So unlike the blogger that went before me, my problem was not with the local staff.  My problem is that Sainsbury's is printing unusable vouchers.  You will notice that in another voucher that was left behind by the previous shopper shown in the top half of the image left is for first time on-line use.  I am not eligible for that one.  But I have included it to demonstrate the presence of the code that the on-line shopper enters to redeem it… and the absence of a code on the coupon that I do qualify for.  The numerous staff that helped me all proclaimed the voucher faulty.  But there is a problem here.  It is not like I just went up to Sainsbury's one day and suggested that they give me £10 if I spend over £50 online.  Sainsbury's actually suggested it… and then made it impossible by not including the on-line redeem code.  So I am looking for a valid £10 voucher for me and all the other on-line users who spent more that £50 this week because it is the right thing to do.