求一篇英文投诉信假定你叫李平,写信给店主投诉你买的羊毛夹克衫已坏,希望要回钱并请求解决问题的办法. 要求：字数不少于80

Hello,I`m Li Ping,my wool jacke has received,but I found that it is bad,I hope I can put it back,and you give my money back,and you should pay for the postage.or any other way to solve it.waitting for your reply.