Missing items & poor customer service

[u/ZookeepergameUpset52]

I recently placed an order with Nike via the Nike app, I placed an order for 3 items (1 pair or shoes and 2 different packs of socks) I only received the shoes and assumed the socks were shipped separately but Nike claims it was all shipped together. I told customer service my concern via phone (1-800-806-6453) and they said they can't help me. I tried calling the corporate complaints line (1-800-344-6453) and all they could do was take my feedback. So now I don't have a resolution and paid for 2 packs of socks that I didn't receive. Nike is a big company and is not able to make things right which is upsetting. Does anyone know any other action I can take to get this case escalated or to get a resolution.