Turkish Airlines doesn't list a dedicated Johannesburg city office address publicly in these results, focusing on online/phone support and airport operations, so for direct assistance, use their Help Center, contact via WhatsApp, call South African numbers (like 1-866-829-1086 for general inquiries), or find CROs at O.R. Tambo Airport (JNB) (Terminal A), as their support is mainly digital or at the airport.