How difficult is to enter armenia

armenia has always been that country i'm facinated with his deep cultur but so difficult to enter

few years back i was burning deep to travel for tour in armenia been a Cameroonian without no friend or family to armenia it was a nightmare to find an agency to send me an invitation as if that paper never existed as whoever angency i was approaching had the same answer ''WE ARE NOT ABILITATED TO DO THAT'' till i gave up

so i here to ask how to other do

how can someone have it without having any relationship whatsoever with some in armenia ?

thanks