Alternator/generator/regulator problems of the 2006 Kia Motor Optima

Car will not always start. Sometimes I have to wait 24 hours and pick up the car wherever I had to leave it cause it wouldn't start. When trying to start there's a clicking sound and all panel light start to flash. Replaced alternator and battery, still not fixed. Seen a lot of reviews complaining about the exact some problem.

I brought a new 2006. 5 kia opt. At less than 3000 miles parking lights would stay on when car was off, auto lights would not turn off, dash lights would flicker. Took to dealer about 4 times and they just played with the switches and said not to worry. At about 5500 miles and a day after the first year of owner ship the car was dead and needed a tow. New battery. Two later same thing, then again 4 weeks later, replaced light switch and did wiring repairs, I now have 23500 miles on the car and have had over 12 tows or jump starts. Third battery, fuse box, alternator and other repairs. In 12/2009 with 23000 miles it dies again 4 times in 3 weeks and had to be towed, another new battery. Something unknown is draining the battery and they can't find it. Am worried that car will die out when driving it or the lighting will all go out causing me to crash.