No problem. I've done many web bots in the past.
One is in my portfolio here on Freelancer.com
I would do this as a "headless" bot script using PHP with cURL. Or if you want it visualized can make it either as a Windows application or with PhantomJS.
A screenshot of their submission form would probably have been useful :)
Depending on the complexity of their submission form it can take less or more time, I think my bid is reasonable.
Done bots for websites, mobile apps and more..
Let me know if you have any questions, any concerns.
(I'm Swedish, living in Thailand ;))