[mothered]

They contacted the carrier and they confirmed it was delivered, which means nothing and they denied the claim.

As per below, the driver failed to do his job and obtain a signature, which ultimately puts the responsibility on him.

Signature was REQUIRED but was left on the porch.

Request your claim be escalated on the above grounds.

I claimed through PayPal. We'll see how that goes.

Be sure to Inform PayPal of their neglect to obtain a signature, hence non-receipt of goods.