Comair not answering after they were grounded

Hi is there anybody else out there struggling to get hold of Comair regarding the flights which was delayed in March 2022 due to them being grounded. I have been frustratingly struggling to get a hold of someone to assist. After numerous emails because their contact number is no longer in use and numerous trips to the airport I still got nothing. I tried getting vitality to assist but they cannot help either even though the flights were booked through their website. I will appreciate any assistance from individuals who has been experiencing the same problem. Thank you