Whack embarkation times for a Group booking

We made a group booking months ago for the Splendida cruise which sails from 22 December to 27 December. Now that final payments have been made and tickets issued we get told that our group consisting of over 20 people will be embarking the cruise ship at different times!! This is ridiculous as we booked as a group and having a group split to embark at different times just does not make sense!! MSC please get better at this as we cant be embarking 12, 2 and 4pm, that just does not make sense to us at all to break a group booking where we’re all linked as one. Get better with slicker service!