Ordered 4 scarves on July 24. After months of delay, I received the wrong, poor-quality products. Seller is now ignoring my messages and refund request.

I placed an order with an Instagram page that does not have an official website but i have chats.. On 24th July, I ordered four scarves from them. After receiving my money she once send me the tracking id but I never got that parcel also that tracking never works. And when i told her the seller she said she will not give the refund but she said that she will send another parcel but that also I never got. And then she ignored me for almost three months and failed to deliver my parcel.A few days ago, she became active on Instagram again, posting stories about dispatched orders and customer reviews. I messaged her again, and she finally sent me a parcel tracking ID.I received the parcel yesterday, and the quality is terrible. She promised I would receive scarves from the 'Kashka' and 'Yusra' brands, but she sent a completely different brand with very cheap fabric instead. Now, she is ignoring my messages and calls once again. What should I do?"