Bad Online Shopping Experience!

I ordered online and 1 item was missing. I’ve been calling the number does not go through, I emailed and didn’t receive a response, I sent you a DM on instagram and I also tagged you on X. This was done last week Friday. A week later no one has responded. Can someone please call me or just send me this missing item which I paid for with my own money and never received. Your service is appalling. Cause how does it take so long for you to answer me????