But you do have redress if your lecturer/tutor folds their arms and says "I've given up on you".
You have redress against that specific lecturer but you don't get to skip out on paying for another lecturer who did his job properly. Why is this so difficult? He got an endorsement and he's required to pay for it. What's that got to do with failing his line training?
If I go to the supermarket and buy some butter and then go back and get a loaf of bread only to find it's moldy, I don't get reimbursed for the butter.
The guy joined the company knowing he had to pay for his endorsement. He got an endorsement and now he's trying to get out of paying it. If he had problems with his line training then he should have addressed the actual issue.