I need help for return of bank guarantee

Hi all! My husband made a guarantee for me to enter Cyprus as his wife though bank and now we need to get this money back because I left Cyprus. The problem is Migration department is not responding for more than 3 months. We left numerous requests, calls, emails and even faxes with the return form itself,.but received 0 response. What would be next possible thing to do to finally talk to a human in Migration Department? Their phone is not responding and gives only opportunity to record message. (+357 22 308808) Maybe someone knows other ways to talk to them ?