Amazon Prime Account Locked Due to Unusual Activity

I’m unable to access my Amazon Prime account because it has been temporarily locked with the message: "We detected unusual activity on your account, and it has been temporarily locked." When I try to contact customer service, it asks me to log in, but I can't do that because of the lock. There is no customer service number available, and I’m stuck without a way to resolve this. I need immediate assistance to unlock my account and regain access. Please help me resolve this issue as soon as possible!