Interesting puzzle game, but… 23/5/6

I think it's a good puzzle game, I love to play it. However, it's very ANNOYING when I have to clear game levels, but I can't pass it at all (I've repeated this level 2-3 days!) I tried to use special bomb items until it's run out, but it seems impossible to clear it at all! I don't care if it'll be a bonus One shot level, but it's Super Hard level! (Level 916) The move is too few and its task is too crazy to clear it out, even though I used special items, it's worth for nothing!!! 900 coins for additional 5 moves, I think it's very crazy amount! I tried and tried and use all of my collecting coins until it's not enough, so I decided to bought coins from the store 2 times! (For playing this level only) Don't you think it's too much?! I want to clear out this level and play this game as my leisure, but it makes me feel annoyed and stressed instead of relaxation feeling. So, it can't help thinking that I don't want play this game anymore.