Kia Optima Questions & Answers

I am disappointed that my Kia Optima has crankshaft knock from failed bearings at 180k's after I had it back to Kia Mt Gravatt for the recall and had the all clear.
I was told the crankshaft was within tolerances which I find it hard to believe that they removed the bottom sump and measured the crankshaft with the pistons removed and measured the crank where the big end bearings would run on the crank all this within a couple of hours,
I think the more likey scenario they checked the vin range for the defect and found my vehicle was not in the vin range and replaced the old dipstick with the new dipstick which i suspect the old dipstick was giving the wrong reading for measuring oil.
I want to know since I did work with the brand for 4 years and I have personally influenced some of my family and friends to purchase a Kia car so far 2 x Cerato and 1 x Sportage what would Kia do to assist in having the engine repaired? given there is a whole Kia forum with Optima 2.4L customers with the same issue.