Worst service ever, they don't even reply to emails

I've never been disappointed like this in all my life i thought buying at Samsung online store would be the easiest, cheapest and convenient way to buy a phone online and even better the phone i was buying was on promotion and i would receive a tablet as well but that turned out to be a disaster i ended up forfeiting the tablet because apparently i had to redeem it on Samsung members app...with several failed attempts to redeem it i ended up calling their client care numerous times, some gave instructions how to navigate the app, some took from one department to another, and i got to promotions department i was sent email to fill in some form and attach ID and proof of payment and it was later declined for what reason i don't know. Today i called and was transferred from one department to another again, until i got to one guy who said let me give you direct numbers to that department and he told me that if i don't claim today i can forget about my tablet because the promotion ends today. So unfortunately i called promotions department for more than an hour in desperation but my call went unanswered until now.