mozilla

I believe we've discussed this before, including the risks of mileage confiscation and customer blacklisting. What I didn't mention yet is the social aspect. A successful chargeback will incur a fee for the merchant and may increase transaction commission rates. The costs of those will eventually be redistributed over all other customers, you and me. So there's yet another reason to exhaust other options before going nuclear.

Here it looks like new information points out there may be a misunderstanding between OP and LH with regards to the nature of the refund, so it's reasonable to confront LH with this new information and see what they think before escalating. But if LH keeps stonewalling OP, even after a deadline was set with the promise of a chargeback, by all means, he should go ahead with the chargeback.