Mine was also attacked by some kind of munchers. I didn't see them. They started eating the new leaves. I went out to spray some insecticides on the leaves. I did that a couple of times and it was ok, but now it has a different kind of problem. The leaves are drying up and shrinking and the growth has slowed down tremendously. I have yet to find out the reason why. Anyway, hope you could do something before it's too late.