Looking for an Australian legal case that matches the following situation.

Customer "A" had two cars for body work/coachwork repairs/restoration.
Repairer "B" (a company) is experienced with luxury cars such as
Rolls-Royce, Bentley and Aston Martin cars. B gives quote for certain
paintwork and interior work. No time frame to finish the jobs is in
quote. B whilst having the cars carries out substantial renovation
work on B's premises significantly delaying the work on A's cars and
work on other vehicles - beyond A's control, cars are at B's for
years. When finished B sends a huge bill - greatly more than quote
even for quoted items. A pays amount as quoted. B argues that quote
was an estimate only. B claims lien over cars for payment of B's bill
and charges storage and interest on the unpaid claimed amount.

Looking for cases in Australian courts - state and federal dealing
with the issues raised and also deceptive and misleading conduct and
fair trading violations. Note that A denied use of his cars for years
(although has other cars for transport but suffers loss of enjoyment
and embarrassment with friends, family and business associates that it
appears he can't afford to get cars back from B). Looking for cases to
support damages claim against B or a cross-claim against B for loss of
use/enjoyment of cars, loss of value of cars and other claims.
Further, it is noted that the cars' values have dropped since the cars
went to B notwithstanding work done on cars.