Lobster everything you said is exactly right!
To me a blown fuse means a short somewhere!
Ablown fusable link means a big short as it is a higher rated fuse!
Obviously they are incapable auto electricians and just put a new fuseable link and said oh well its not blowing now so it must be alright! ( Donkeys!)

If it was a shop that I worked at I would be really embaressed and I would do like 1200rallycar said!
It's like if you go to a mechanic and your brakes don't work! he checks and there is no fluid! so he just puts somemore and says thats $60 thanks and seeya later!
If you crash from this he is the lisenced repairer so he is held responsible!
Fair enough you pay for the original problem but he should pay for what his not doing has caused!

*** I think I am going to move down to Canberra and open my Auto Electrical shop!
From what you say there is a lot of buisness down there! Plus if I do things right I will get plenty of customers from these donkeys!***