yesterday i was refused to enter Hong Kong through the airport, can i try again?

Am a business person from Uganda,yesterday I tried to enter at the airport but upon arrival,one immigration official denied me entry and forced me to sign papers without reading through even when I plead with him to allow me read what I was to sign severally on every document they brought before me. After that I was given a REFUSAL NOTICE reading that I was refused entry but still the notice didn't explain why I was refused entry. I was then put back on the next aircraft and returned to my country. And so here I ask,can i try to go back to the same country and be allowed in or did this mean deportation that I will never be allowed to go back to HK in particular? Second, can I obtain an entry permt from the Chinese consulate in Uganda and be assured of entry to HK? Thank you