Answer:
Officially, CoinJar does not provide phone-based customer service for general account inquiries. All support is handled online through the CoinJar Help Centre or via support@coinjar.com.
However, some third-party sites and user forums list the following numbers:
⚠ Important: These numbers are unverified by CoinJar and could belong to outdated or unofficial channels. For safety, CoinJar recommends sticking to email or their official web portal to avoid phishing or fraud.