Business ProfileforSwope Hyundai

my appointment date was Wednesday april 24 for shock sensor to be installed I had already purchased the part through their parts department and already had my car diagnosed prior to making this appointment. The service manager junior called me a couple of days later after my car was dropped off and said it needed ignition cores and spark plugs i spoke with junior and explained i had just replaced the ignition cores a month ago he insisted this was the problem according to his diagnostic test and would fix the issue i agreed if to have them replaced if it would resolve the Issue On april 29 I picked up my vehicle the engine light came on while driving the transmission was slipping the manifold was shaking and vibrating the engine was trying to stall I barely made it home. I called junior back and he said bring it back and i will look at it to see what is wrong. i had it tow back to the dealership service department 2- 3 days later junior called me and states oh its the cv joints causing your issue i put it back on the the diagnostic machine and the charge to diagnosis it is another 115 on top of the 733.73 I had already paid for nothing. at that point I told junior i will be there to pick up my car.