They spend 2.5hrs to find a blown fuse
As experts, they should know which fuse is related to the left indicator circuit so that should be their first check. Then they should break out the multimeter and measure resistance to ground to ensure earth only exists where it needs to exist while wiggling the accessible wiring. I can’t see that as being more than 1/2 hour of work
I just hate how the industry has become a bunch of slackers and cheats that feel they are worth expert payment yet provide unsupervised apprentice monkeys to do the actual work