I cant get the visa appointment date i would like.....

i have already purchased my ticket to china, because i found a great deal on the air fare i'm an american citizen living in ghana with a residents permit.
I thought that china visa applications in ghana did not need appointments but i just found out that it had been changed to appointments via web 2 months ago. are there any options for me? seein i only have 2 weeks left and there are no appointment dates available for the rest of the month.