I bought from this shop "Susheng Boutique" part with series Color classification : 28239294.

First I wrote to clarify if he had this model and when he would send it to me, he told me that he would be able to send it to me the next day and I bought it too, when it was recorded on the website that it had been sent, I even wrote to him and told him that I wanted to add this model to tell him that he would also send it to me and I bought 8 more pieces,  I bought a total of 10 pieces for a total of ￥768.21.

When I received the package, there was another item inside that I didn't buy, in all three boxes I used to put the phone when I bought another part of it.

I wrote to the store, I sent what the courier brought me, saying that it was other things, he told me to send it the next day, but he lied to me, he didn't send it to me, he didn't give me the money back, and he doesn't answer my letters.

What should I do at this time? Who will return the money to me if this seller cheated me?I am very angry and disappointed. Below I will attach photos of what I wanted to buy, how much I paid and what the seller sent me the yellow incomprehensible item