Royalton Luxury Hotels review: emails being ignored by hotel staff no replies

I have been emailing Jaroma Grant and Silvia Pita and Sonyque Suriel staff at The Royalton Hotel Antigua for several weeks now regarding a complaint during my visit there in November 2019.
They have decided not to reply to any of my emails since way before Christmas and I am now very annoyed that they all feel the need to ignore a customers emails ..Their actions are very unprofessional to say the least, and I would like to be able to make a formal complaint on top of my original complaint about these members od staff who feel the need to ignore my emails.
I would therefore very much be grateful if you could forward me an email address of the secretary and CEO/Managing director of Royalton resorts+Sunwing Travel/Blue Diamond resorts, in order for me to address my complaints with them in full regarding this treatment of the staff at the royalton resort Antigua.
I shall look forward to receiving information from you in order for me to obtain correct email addresses where I will be able to obtain professional replies from.
Many thanks.
Kind regards,
Ms Christina Henry
Email: [protected]@outlook.com