Automobile service very bad work

Namaqua Herstelwerke 20 De Kock St, Onverwacht, Strand, 7140 This is to Management i did not accept or reject any quote The only quote i accepted was for the replacement of the clutch kit but management forgot to inform me of the oil seal replacement I am not a charity i paid you for a job that you did not follow through The quote you gave to my wife is not related to the problem of the oil leak So why must i accept it My argument with management is related to the gearbox oil leak which you had overlooked and not related to any other matter on the car I need to know why as management you as head of the work shop did not notify me of the oil seal that had to be replaced as you were suppose to have done while the mechanics were busy taking out the gearbox to replace the clutch kit as you told me personally there was no gearbox oil So now i have to pay another mechanic which involves labour of R1500.00 plus R200.00 for the seal plus gearbox oil For the replacement of the oil seal