If I decline a seller's partial refund, what happens next? Can I still return for a full refund?

[f-mart]

So I bought a toy on ebay and it's missing pieces, not as described in the seller's descriptions. Even with the partial refund, the toy is useless without the additional pieces.

If I decline the seller's partial refund, can I still return this for a full refund?

[hafoster]

Yes, you can --

when you decline, the seller can make another choice by the deadline --

return for refund, refund without return, or escalate --

then eBay may decide to force a refund without requiring a return.