Samsung Buy and Get

I bought a Samsung appliance because of the Buy & Get travel promotion but now that I am trying to redeem my travel voucher I am told that the voucher has expired.

The Buy & Get customer service centre is being very rude and unhelpful and everyone from them to Comair to Samsung is passing the buck. They keep pointing to the Terms & Conditions which state the voucher expires after a year.

I see now that this is the case but I feel it is unfair to have the voucher expire before the validity of the actual travel date expiry period and the date the voucher expires is dependent on when I actually received the voucher (which could have been anywhere from October to March the following year in some cases. The date I had fixed in my mind was June 2019 because that is the date that the flights must be taken by. Why does the voucher expire before the date I could use it by?

This seems to be typical of 'buy and get rewards' programs which have a number of hoops to jump through and catches (terms & conditions) to ensure as large a 'slippage' percentage as possible.