how to get visa as no consulate office in our country!!

hi, i am from bangladesh. Planning to come to visit mauritius in end december.But before that i need visa from here as we dnt have any consulate office over here.So could you please reply that how could i get visa to visit mauritius & how long i can stay there?? And what will be the cost of my visiting mauritius if i stay there for two months.

Thanks for anticipation.