Here's a few key questions:
- Do you understand that Wikipedia is an encyclopedia, and not a business directory?
- Do you understand conflict of interest?
- Do you understand that to be considered for an encylopedia article, the subject must be considered to be notable?
You are currently blocked because your username appears directly related to a subject that you are trying to create an article about, contrary to the username policy. Changing the username will not allow you to break the 3 important questions above.