Travelio says it is 'waiting for billing confirmation'. Is that legitimate?

Building managements typically issue utility statements on a fixed day each month, which is why complainants have challenged this explanation as open-ended. It appears in three separate records here, including one tenant still unpaid after 18 working days who pointed out the building issued statements on the 5th of every month. Reply asking for three specifics in writing: the date the statement is expected, the name of the contact at the building, and a committed payment date once it arrives. An explanation that never resolves into a date is not an explanation — and once you have asked for those three things in writing, its absence is itself evidence.