I need help to get a business visa to stay in Guyana

I am planning to move to Guyana soon. I could only get a tourist visa for 30 days and I want to stay for longer therefore I want to apply for a business visa. In order to submit the application I need a Sponsorship letter from a company that is registered in Guyana. I need their name, address, phone number and tax liability statement.
Please bid if you are in Guyana or if you know somebody there who can help me with that.