Dear Mr Chen,
We are sorry to hear that you are not satisfied with your robot. We understand why you are so angry. We would like to send you a new robot. You will only need to put the batteries in to make it work. Of course, you can have your money back if you would not accept our new product. However, we hope that you will give it a try. We are sure that you will like it. You are welcome to let us know whenever you are not satisfied with it. Please tell us your decision. If the new robot is your choice, please let us know when we can send it to you. We look forward to hearing from you soon. Yours sincerely, Lin Fang Manager