I am going through the same thing with a horse being "professionaly trained." we just got a new pony in and I was the one in charge of riding it until we figured out what we were going to do with it, but when the people got there they dropped the pony off and left immediatly. We realized why!!! We think this pony has never been ridden in its life. It was fine with the saddle but once I got on it was like a rodeo and it has been every single day for 5 days straight. The vet says that there is nothing wrong and that he thinks the pony is NOT broke!! ha ha ha so until this pony can be used for showing/leasing/lessons I have to train it as well as my 2 horses and my new project pony!!!
Hope you are ok!!And I hope your training goes better than mine :)
It is not just a horse,
It is the one thing that keeps me from being just a girl