Worst experience ever. Samsung S9 phone is faul...

Worst experience ever. Samsung S9 phone is faulty, and still under warranty. My email registered on my Samsung account is now obsolete so I cannot access my account to backup the mobile prior to repair. Three days. Numerous phone calls (including to the Phillipines???), three separate online "chats", more phone calls and still I cannot get the email address on my Samsung account changed. Promises, promises. No action. Terrible customer service at every level. I regret my loyalty to the brand.