AliExpress.com Faild to send freebie Internet

I have been a member of the aliexpress online shopping site for around 7 years and this is my first bad experience. At 02:05 Dec. 14 2017 I won some boots on the site, which has a daily freebie game where you can apply for a freebie and if you are lucky you get to have the item you have chosen for free. So I won the boots and was told by the store that was supplying them, that they had made a mistake and they could not send the boots but could offer me a discount. After I refused the offer and said I believed they were legally obligated the honor the transaction I was told the store could offer me a $5 coupon, that was later increased to $10. I will passed a copy of the latest correspondence with the store below to give you an idea of what I have been dealing with. Hello Mr Lee. I won the boots fairly and I believe you are legally obligated to honor this transaction.

I find the fact that you sent me a piece of cardboard in the post, offensive and a waist of time. I have photographed the package you sent me and will keep it as evidence. Please complete the transaction as soon as possible, Size 42 boots Please I will not stop in my pursuit of Justus, If you fail to honor this transaction, I will endeavor to contact Mr Jack Ma personally. His answer, Dear, I have told you about my mistake. I am also very helpless, and now I have been punished by the platform, but I still hope to save my reputation. So I'll make a $10 compensation. Dear, in this event, you and I are all victims, platform locking activity settings, I can not stop the occurrence of the event. I'm helpless, but none of the buyers can understand my pain. Also, please forgive a person who is willing to confess a mistake once. The benevolent man should do it. This has now gone on for several months and all attempts to resolve this through customer serves has proven useless, Boot value is around $55, Please help