The description by OP in comments like https://old.reddit.com/r/LegalAdviceUK/comments/1s92fql/my_s... seems to strongly imply that all the accounts were unconnected in a GSuite sense, and they are being slowly recursively banned by Google based on indirect connections like recovery emails or co-presence on a device.
I don't see any reasonable way they could have saved themselves besides something crazy like requiring every family member use a different feudal lord - one person gets Google, one person gets Apple, one poor guy gets Microsoft...