Once Guarantee auto in Indiana was doing an oil change.
With the oil totally drained out, the service guy said to the brain dead teenager, move that car off bay three so we can get a 4x4 in there.  The lift in bay three was heavy duty and could lift large trucks. You would think that the "I could care less" teenager would PUSH THE CAR BACK OUT! But no.....................
Well, the brainiac teenager who was doing the oil change, fired up the car, backed out knocking to beat all hell all the time.  Apparently all that knocking did not faze his fogged brain that something was very very wrong here.
He pulls the 4x4 in to bay three. Then, amazingly, he fires up the car again!  Then it died before he got it up to the next open bay.  Stumped, he tried to have it jumped.  no go.  He then comes to the brilliant conclusion that the starter failed so he writes up the invoice for a starter.
New starter installed.  Still no start.  Barely cranks.  In a fit of moronicitis, they decide to hook a 24volt battery to the car.  Attempts to start the car results in the engine wiring harness going up in smoke.  Now they are really f****.  So next they decide the alternator sh*t itself and proceed to replace that as well!  Then the voltage regulator. ÂÂ
After all their fuc*ups, they still they wrote up the bill for a new starter, new battery , new main battery harness, alternator, volt regulator plus labor.  Needless to say, the owner was pissed as hell.  In between threats of physical harm to all involved as well as a whopper lawsuit, Guarantee Auto ends up putting in a new engine, new wiring, new starter, new battery, new alternator, repainted hood, (from the underhood fire) plus kicked the guy some cash for "pain and suffering".
Lesson......you want it done right, do it yourself!