Enterprise DNS providers

Hello any weekend workers :) We are looking at urgently deploying an outsourced DNS provider for a critical domain which is currently unavailable but are having some difficulty. I've tried contacting UltraDNS who only allow customers from US / Canada to sign up (we are in Malta) and their Sales dept are closed, and Easy DNS who don't have .com.mt as an option in the dropdown for transferring domain names (and also support is closed). Black Lotus looks like the next best contender, has anyone had experience with these or any other recommendations for how we can transfer a .com.mt to a reliable hosting provider during the weekend? Thanks! Ken