2007 Lexus ES350 transmission problems

We bought our lexus 350 on sep 29, 2006 within 3-5 months we had issues in acceleration pedal. We took to the workshop and stated our complaint on increase is speed the 1st 10 min of driving. The replaced the transmission. But sometimes we still have that issue. But when we take to the dealer they say they couldn't reproduce that. We are now worries about the sticky gas pedal issue. Once we even hit a cyclist is the turn when I couldn't control the speed on the turn.

Numerous complaints were made to the lexus dealer regarding sudden unexpected surges and acceleration problems with the 2007 lexus es350, which were ignored as a service issue until the transmission demonstrated erratic and uncontrolled operation during a test drive with a certified lexus mechanic. The car would surge and shift erratically until the transmission completely failed and the car became inoperable.