M-Business Visa Application

Hi, I have my own company and been invited by a Chinese company to visit their company, attend meetings, various discussions etc, in order to build stronger business relations. They sent me an Invitation letter, Letter of Invitation Visa form, the company Registration certificate, the invitee sent copy of her ID card (both sides) etc. I provided Letter of Acceptance, application form. I was told I can't apply for this type, I must apply for a WORKING TYPE???? Why??? I'm not going there to work! I've had to cancel my flights TWICE as the guy working at the Consulate has no idea. What he says and the website is TOTALLY contradicting. I'm only allowed a 30 day entry permit, single entry, if longer it's classed as a Z-type and the invitee company must apply for it?