I am the only employee of my US company for my territory.
My only collaborator is a consultant salesperson. 
I do not report to him, it's only support as needed.
He spends a lot of time with a few high-forecast US accounts.

As a result:

1. He overlooks the territory, 90-95% of his time goes to the US
2. With nobody else to help, it falls to me to run this "little shop", and when I directly help create new opportunities, he will try stall progress until he can directly talk to the customer. This includes creating conflicting meetings, "competing" with me in conversations with customer, lying to customers about my geographic location or role when relevant, leaving me out of important conversations, etc.

I was able to bring two high-revenue customers onboard, and this person will get the commission. His ideal situation is me helping him out, but without any career advancement: he will not allow me to get prominence or credit for my work.

He also tried replacing me with a non-technical friend, but failed because of the technical gap.

Because of his behaviour, the company cannot really grow outside his "big accounts".

How can I help the company understand the situation?