Ah, customers, bless 'em. This is from earlier this week:
Customer comes into workshop at 12:15pm with a cheap and nasty no-name E-bike
Customer: My back brake doesn't work. Can you fix it?
Colleague: Sure, I'll see if we can fit you in.
Customer: That's not good enough: I just need the cable changing.
Colleague: That's why we may be able to fit you in. Let me talk to the supervisor.
Customer: But it's just changing the cable (the bike has mechanical disc brakes) it'll only take ten minutes.
(a couple of minutes pass with the customer grumbling to no-one in particular; colleague returns.)
Colleague: Okay, the supervisor says we can fit you in, you can pick the bike up at 2pm?
Customer: That's far to late I need it done now:
Colleague: Unfortunately we can't do it right now. You can let us do it by 2pm, or bring it tomorrow, and we'll see if we can fit you in tomorrow,
Customer: But it's an easy job; I could do it in ten minutes...
Colleague: That's also an option, you can buy a cable and fix it at home.
(Customer realises my colleague is quite serious. Customer exits shop complaining bitterly, sets up outside the door and starts removing the cable. About ten minutes later my colleague happened to go outside and realises the customer was badgering clients to help him).
Customer: (Holding up the now thoroughly dismantled rear brake assembly) But It's dangerous to travel like this: I need you to fix it.
Colleague: (Trying not to laugh) Mate, you took it to bits, that's your responsibility.
Customer: Fine, I'll take my money to another workshop... stomps of in a huff, pushing bike which is now dragging its brake cable along the road.
Colleague: Good idea (closes door)