Can I still get a visa into China?

Ive been in PRC for 7 months, but back in Australia now, ive been given so many tourist L types (even though i'm working) that they wont allow me anymore, usually 60 days but my last one was only 14 days. Ive been told numourous times now I cant get the 60 day entry permit. I was wondering if they'll allow me to get a 6 month or one year entry permit? and does anyone know roughly how much itll cost. Ive been working over there though going back and forth from PRC to hongkong to do my entry permit but I can no longer get the tourist L type. Can someone help?