Throttle Body issues

What is your question?

1st issue at 40,000 miles needed to have the "Water Pump Replaced (was originally going to be charged from Dealership over $800 but after I mentioned calling VW Corporate - the price dropped dramatically from $800 to $110. (yeah - car was still under warranty shouldn't have been charged at all - even got my $110 back) then in June of 2013 the EC "Engine Fault Workshop" message came on - was told is was a faulty Throttle Pedal Assembly - I had to have it replaced (3 times within a 2 week period I kept having to bring it back to dealership because even after it was replaced the EC light continued to come on more "Throttle body issues, ie wiring, etc. Then in June 2014 EPC light is on - brought it to another dealership was told it was "Internal Defect in Throttle Body" - replaced that Then in July, 2015 EPC light is back on brought it to Dealership - cause communication loss - dismissed - 2 weeks later August EPC light back on lose power won't accelerate bring it back - now told its the Throttle Pedal Assembly having that replaced now. Please help - is this a major issue with vw that I will have to deal with for the life of this car? Should I sell now- or is this poor workmanship from Dealerships?