Can contractor do my roof without notifying me?

[Vadim Du]

I paid a contractor 50% deposit to replace the roof in my rental. They were supposed to notify me later when they going to do the job. 

Now I come to find out that they already did the job last week, without notifying me.

Asked them for pictures that show that they tore out old roof and raised the A/C units before placing the new roof. They said they don't have it.

Anything can be done about this?

[Brian Pulaski]

Originally posted by @Vadim Du:

We signed a contract that defines the scope of work

Does the scope indicate anything regarding inspections from you? Are you able to get to the house and see it? You can usually see if there is more than one roof (assuming asphalt shingle). Assuming they did the job well I would be happy a contractor is coming in and doing work fast. My old roofer in CT was always getting my jobs done right away (faster than he tells me) and it was great!