Account Info Change Request

What should I do if I believe that my account has been hacked?
How do I update my address?
How can I correct my Country of Birth information?
Why is my country not available when I try to update my address?
How do I change my name within my account?
I did not receive a confirmation number by email for verifying my identity.
Tax: UK persons and entites: What happens if I move from the UK to another country?