not following prompt and eating credits

for the past week i’ve had 2 issues daily:  1.  not following exact prompts.  i ask for 12 roses i get 13, 14, 15, 16 not 12 so i have to keep regenerating and its eating credits.   2.  when i generate a new image it says error and to try again later, but if i hit generate again it will do it immediately and then i see the following day duplicate images - eating all my credits