Where is DELTA 182 from KIX to SEA?

I was at the SEATAC airport waiting for people on DELAT 182. The arrival notice said it is arriving little after 3pm. Originally it was supposed to arrive at 11:30am. I waited until 4:30pm and found out that the flight was cancelled. The online, arrival information and Delta rep. on the phone never said the flight was cancelled. They had no idea where the plane was.

Here is what happened.

(1) Delta 182 took off from KIX and flew about an hour before they found out the 5 out of 6 toilets were out of order. So they decided to go back to Narita.
(2) After spending about 90 minuets, they took off from Narita. I believe it was around 8 pm.
(3) After flying for several hours, all the toilets except one even can turn the light on. So, they decided again to go back to Japan. This time it was too late to go back to Narita. (Narita is not open 24 hours.)
(4) They arrived back to KIX around 5am. That is 12 hours after the flight took off from KIX.
(5) All passengers were taken to Hotel in Osaka.
(6) They are now on their way to Seattle from KIX.

Delta is using aging Boeing 767-300 for this leg of the flight. I hate it. I wish they use better equipments. Also, nobody knew where 182 was. I called the flight information and they told me the plane will arrive at SEATAC at 3:00pm. The arrival information at the SEATAC said 182 arriving just after 3pm. I even checked online and the information was same.

Delta needs to get their act together or they loose customers. I do not want to see any accident caused by lack of maintenance on aged plane.