I've got to level 4596 prior to that I had earned 3 build a bots but they are not showing from level 4596 what's going on its hard enough to complete these levels now without boosters, I refuse to spend any more money !
I'm up to level 4350, spent loads now with build a bot I refuse to buy anything ! You have made this game now not enjoyable, too difficult without the boosters., time to call it a day, goodbye !