How can I punish this Chinese audio dealer

I ordered three pairs of tubes from him last year.

The dealer used to respond to my e-mail within 2 days with fast shipping.

The Psavne Acme 805 tube went bad after 7 days of use.

But with claim of bad tube, he stopped responding to me at all..

I sent him 6 e-mail within 7 days.

Will Paypal refund be the best way to punish him?

[email protected]
수 2018-12-26, 오전 12:47

ok sir

[email protected]

From: Thomas Kong
Date: 2018-12-26 16:43
Subject: Re: Order Confirmation No: 11720
I received Acme 805 tube yesterday.

PSVANE Acme Serie 805 Vacuum Tube High-end tube Be

Please note that both tube are made by same company Psvane.

Cossor valve was league above from stock tube with refined bass and deeper bass.

As soon I replaced Cossor Valve 805 with Acme 805 today, I noticed clear window of transparency and more details.

It seem like I had inserted pre amp since the change was so drastic.

The soundstage got wider with 3-d holographic with clear window.

It had not been burnt yet so it may be possible to change its sound for the next 2 weeks.

But the first impression is very positive.

I will keep you informed of the progress.

I also have pair of NOS United 805 tubes which I had not used yet.

After Acme got fully broken in, I will also compare it with NOS United.

Order Confirmation

Thomas Kong,
Thanks for shopping with us today!
The following are the details of your order.

Order Number: 11720
Date Ordered: Thursday 20 December, 2018

1 xPSVANE Acme Serie 805 Vacuum Tube High-end tube Best Matched Pair (Psvane Acme Serie 805)$732.99 USD
---------Sub-Total:$732.99 USDFREE SHIPPING! (Free Shipping Delivery Charge.):$0.00 USDTotal:$732.99 USD

As usual, I expect you to ship it fast


United States
Payment Method
7aeeb429 76a8 4040 a90e 93802cf27573shkong78
Is he actually a Korean dealer? Since I see Korean characters in the email you quoted. 
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Vacuum tube commerce has collapsed in the 40+ year lapse since I abandoned them. All of the principal domestic, British, Dutch, and German producers are now either defunct (like Tung-Sol Electric, my employer from ’57-’60), or they’ve long since ceased making tubes. The entire world market for (receiving-type) tubes is now confined to a small coterie of audiophiles and guitar buffs, and served only by obscure Russian and Chinese suppliers with no previous market recognition. (There are other minor sources in former Soviet bloc countries.) The quality, consistency, and reliability of the tubes made by those arcane foreign suppliers is a subject of concern. And those sources will persist only as long as there’s viable demand, so the outlook for assured access to replacement stock seems dicey. Further, this situation prevails at a time when every instrumented means of evaluating audio quality validates the superiority of modern solid state design. Tube boosters reply that “my ears are more accurate than your instruments”, but their faith is mired in groupthink. There’s no credible A/B/X aural evidence to support the “tubes sound better” cult. Vacuum tubes are the remnants of a dead technology. Don’t consort with zombies.

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>>How can I punish this Chinese audio dealer<<

Send him the Yoko Ono Box Set.