Giesecke+Devrient Product Manager interview questions

3 technical person took interview. All were asking java related technical questions. This was not expected since product manager is suppose to be functional person. But the interview panel was adament about java requirement

1st Interview - Face to face with HR Manager - pass. 2nd Interview - Face to face Local MD - pass. 3rd Interview - Face to face Regional MD - pass. 4th Interview - Skype Call Regional Project Manager - fail. Called again after a months for next reinterview: 5th Interview - Skype Call Regional MD - pass. 6th Interview - Skype video Regional Project Specialist - pass. Verbal whatsapp acceptance, delayed join date, lowball salary offer, promise to send offer letter but no offer letter until today. Already notice previous employer, invest the time and money for travel and accomodation because the verbal acceptance and still no news from the company.