they say you can not appeal decision of secretary or department of state, how could my company write a letter to the consulate for give me a visa again?

when you re-file (if eligible to re-file) for a new visa, and submit your supporting documents, the job letter would be one of those documents

the letter of my job must be direct to the consulate of nogales?

consult with an attorney first, have everything reviewed by a lawyer

thanks a lot Irene