I had issues with the link in the email advising me of the process to send in the phone I had used as a trade when I pre-ordered my S24 Ultra. I made numerous calls to Samsung's 0800# and was promised call-backs on 3 occasions, but never received a call. When attempting to escalate the issue, I was told to use the "Contact the CEO" link on Samsung's website. I did this over 5 weeks ago and have heard nothing. In desperation, I dropped the phone off at their Auckland office last week, when there on holiday. The phone I purchased is great, but I will never buy anything direct from Samsung again, as their customer service, via their 0800#, is non-existant.