Shocking! Customer service non- existing

<p>I am supposed to receive a free gift with my Samsung S8 which I claimed via their rewards app. On there I put the instruction for them to call me before they deliver. To my surprise after 3 weeks of not hearing from them I was told my address was wrong and the courier couldn't deliver, so why couldn't they call me to verify my address. I then gave them a different address and was promised delivery within 5 working days to date on I haven't received anything. When you follow up via email you get a response after 5 days and all it says is your package is with the courier. And calling doesn't help because they are always "not able to take your call" you must send an email which doesn't get responded. </p>