That's such a shame - it happens ALOT though - I found writing down directions really helps and don't ever go to a new groomer without that - it still doesn't guarantee a good cut -
Most of the yorkies here aren't showdogs - you should be able to go to the gallery and find good pictures - there's lots of cute yorkies here...or search the net...The hair will take about 2-3 months to grow back approx.
I have some closeups I just took of my girls and you can see the ears REALLY well - they're in My Yorkie Section ...Cheri and Chanel have BOTH had really bad grooming cuts so I do them myself now but I follow what the groomers originally cut....
Also - a very cute site is
www.MyLittleMia.com - she has an adorable cut