Rollplay-1. smartphone that you want to purchase 2.problem 3. problems after purchasing

1. Hello. Is this the Samsung Electronics store? I am calling to get some information on the new Galluxi Z flip. I am really looking forward to this smartphone being released. I wonder if I could reserve this smartphone in advance. When will I be able to purchase one? How much will it cost? Are there any discounts available for workers? Do you have another model you would like to recommend? 2. Hello. I hope you remember me. I am calling to report a problem with my purchase. I bought a new smartphone at your store an hour ago. Smartphone heats up very quickly. I only talk about 5 minutes! I think it is defective. What am i supposed to do? I don\'t know what to do. I wonder if I could exchange it for a new one. If that is not allowed, can I get a refund? I would like to return it and get my money. What do you think?