You could have recorded the gameplay and report it. Your fault. Don't blame staffs for it.
If a player has not recorded but chosen to invite a staff-member, it is not considered their fault alone, but also the staff that has ignored is responsible. Plus, in the terms of staff, becoming a Trial is approving that no player would be ignored. (Check the Trial form).
Some staff do respond to party invites, but most don't.
staff i fucking keep inviting u to games we lost mutlple games clan points just bc u guys dont ever review our reports nor do anything bout it when we invite u to a party most a mod has done to us is kick a whole lobby full of temers
They do review reports on the forums, because they have to anyway. But for quick reports, either party invites, or discord DMs.
Build a friendship with a few of them and you will be prioritized.