ZERO Response for WEEKS!

Ive been trying to get hold of Mango Customer Care/ Voucher Division/ Refund Division with ZERO help. You hold on until the call ends itself! I've sent numerous emails and still no response! I appreciate the fact that they are going through a very tough time but to struggle to get hold of them for weeks with no response is completely unacceptable! If I could give them no stars I would.