Samsung false promises

Samsung is currently running a promotion that "gifts" customers with a voucher when they purchase a Samsung product. I was told that this voucher can be used to purchase any Samsung product from the Samsung online store. I received the voucher in November and have been religiously checking the website waiting for stock of products in order to use my voucher as it expires on the 15th of January. For 3 months there has not been stock of more than 50% of the items which is convenient since all other stores have stock of these products but the voucher cannot be redeemed at any other store besides the Samsung online store. I have contacted customer service several times, nobody can advise when there will be stock. I have emailed Samsung twice, with no response. If not for the voucher, I would not have purchased the Samsung product. Samsung seems to purposely be withholding stock online, when the vouchers expire, I would not be surprised to find most products back in stock. Samsung is promoting these gift vouchers to get more sales and then slyly withholding products from customers. I started filling my new home with Samsung products as I would have liked to stick to one brand throughout but this just leaves a bad taste in my mouth. Samsung is displaying ********** and ************* activity combined with disgusting customer service, I will never purchase another Samsung product, I expect that their false promises are a norm.