I have 2 that I have replaced 3 times. I got them at a local greenhouse. They told me they were begonias so I treated them as such. They were dead within a few days. They replaced them for me and the same thing happened. I found them online and went back to the greenhouse with my information. I enlightened the worker, and bought 2 more. They've been alive now for a few weeks so I think I got it but the one with pink and green leaves isn't looking all that great. Can someone give me any advice before it's too late. If I repot, should I just use peat and vermiculite? I have them in a south facing window, is that ok? Can I start the runners in case the mother plant doesn't make it? Thanks for any help.