Flight JE262 on 29 Sept from DBN to JHB was delayed from 12h10 to 17h10. There was no communication from Mango with regard to this delay nor could we get through to the call center. When I called ACSA DBN I was told Mango agents were told to ignore any calls due to the many delays being experienced. Still cannot contact anyone from Mango. I send an email asking for a voucher to compensate for the delay, and guest what, no response to date. Booking reference number SQDBTJ.