What should I do if I receive a no-reply email from Coinbase?

I'm wondering, what steps should I take if I encounter a situation where I've sent an email to Coinbase seeking assistance but have not received a reply? As a cryptocurrency user, timely customer service is crucial, especially when dealing with financial transactions. Should I resend the email? Wait for a specific period? Or is there a dedicated support channel I should utilize instead? I'm concerned about the potential delay in resolving any potential issues that might arise if my initial query isn't promptly addressed. Could you guide me through the recommended course of action in such a scenario?