No you're not expecting too much. Maybe I had too much coffee when I answered. I apologize if I inferred it was you. I get kind of tough when discussing this topic because of history. Here's an example of what I mean:
We were renting a house out west, and the owners offered to pay for the first cleanup, then we would be responsible for the rest. Great! I figured they would let me know when they were to arrive, right? In the meantime, my husband and I started working outside, and put up new landscaping lights to make it more like our place.
One day, I went out to the store, and came back to find about 10 men that I didn't know, all over the front and the back yard. I thought, what the heck? They were trimming things, up in trees, near the pool doing who knows what before I came home. None of them spoke english, so I kept searching until I found found the head guy through the gate, way in the back. I wanted him to stop one of his employees who had pulled up our new landscape lights. The employee was putting them in their work truck to haul away. The head landscaper said, "Oh, I thought we were supposed to put in new lights." I said, "They ARE new lights, we just put them in!" (What they had done was remove the new lights, and replaced them with old used lights). Also, I wasn't familiar enough with every single plant, so I will never know whether what we ended up with was correct. At that point I just wanted everyone to leave....
After that, I put a lock on the gate so no one could just "show up". Long story short, I feel your pain. I hope you can find someone you trust. Maybe a neighbor has someone that they could recommend? Or if you see someone's yard that looks fabulous, maybe find out who they use, or if there's a truck always in the area working on a lot of yards, that's always a good sign.