Well i have the same sort of deal with them too, nothing here is made up all personal experience.
Dropped car off to get ecu wired into ignition (20 min job) the rest was done, some other random work and a dyno tune, i had brand new plugs in there but for some reason they wanted to put new ones in (not calling me either) and did the same with leads, so after 3 weeks for a 2 day job i have a $1500 bill and a dyno print out for 94rwkw, they could not pinpoint a miss with the coil packs i had said it was a unservicable ignition problem (cost me $70 for new coil packs)
Plus the fact my cam timing was out and i mentioned this to him and his reply was "Well it seems to run alright where it is" (Was 2 teeth out (SOHC)) + Many many more little thing but i wont go into it
At the end of the day i went to a place closer to me after i replaced this coil & ran some new wires and 94rwkw went to 296. Oh and that cost me .. $340!
I'll admit the car wasnt perfect when it went in but 3 weeks later bad communication and alot of bullshit costs is not on.
All of this has pushed me to learn how to tune my own cars.. getting there.... slowly.
Oh and rofl when i paid and went to leave he started making comments about my shit box blah blah shouldent even let me leave, duty of care blah blah, go on, try to stop me taking my car you goofy looking fish "Richo" richard.