Can my surgeon repair, refund or doing a free surgery for his mistake?

Every surgeon has their own policy but many if not most will do revisional surgery without charging a surgeon’s fee but holding patient responsible for OR fees.  However, if an error was made that is an additional consideration.  I would  approach your surgeon in a positive manner, and give them a chance to respond.  The best surgeons want to make every patient happy and will try very hard.  Each situation is different and choice of implant size can be a judgement call.  I would try to achieve a positive outcome with your surgeon as your first and best option.

I am sorry to hear about the problem you have experienced. 
 Generally speaking, in cases where an unfavorable outcomes are present it is best for patients to discuss their concerns in a calm/constructive fashion; most plastic surgeons very much want their patients to be pleased and will do everything they can to improve outcomes.  On the other hand, an accusatory stance taken by a patient does not end up working out well for anybody involved.  For example, I would suggest avoiding using inflammatory term such as "botched"... Overall, staying emotionally even keel tends to be helpful in these cases.Assuming you are working with a well experienced board-certified plastic surgeon, who you feel  confident/comfortable can achieve an outcome that you will be pleased with, I would suggest that you "stick" with him/her. He/she knows you best, is highly motivated to achieve an outcome that you will be pleased with.
 
If, on the other hand,  you have concerns about your plastic surgeon's ability to achieve your desired outcome, best to seek  second opinion consultations with well experienced board-certified plastic surgeons.  Best wishes for an outcome that you are pleased with long-term.