I think I'm Stuck in Earthbound Zero

I’m playing Earthbound Zero (MOTHER) on an emulator. I’ve reached Magicant and am trying to get through the Crystal Cavern (that’s the way out, right?), but I keep dying, especially to the fish. After dying yet another time, I was, as usual, teleported to the Mysterious Mimicker’s house. But something is wrong. I can’t move, no matter what buttons I push, and the z button won’t work either. The phone-ringing noise keeps going off too.
Please help, I love this game even if it is kinda frustrating and the random encounters just won’t stop. I’m at level 15 and I don’t want to lose my progress; I really want to meet Ana.