[shannoxtn]

He stated "I said I'll refund you". It's an Indicator of making an effort than not.

Whether he did, Is Inconclusive at this stage.

tell him to give you a proof that he said he will refund me cuz he never did

It's your duty to provide evidence.

It's my role to examine It.

But when he deffend his self he should provide proofs ! not saying it like that