I want to inform the community that the case has been settled while both party took 50% loss. As both party made mistake from their side though the main mistake done by the uniochange as they had contact on site as well as on email but considered the discussion somewhere else (Telegram I guess). They could verify that before sending the payment. I think it is a good lesson for them. Same type of mistake done by sariful as sariful did not verified the telegram id is of uniochange or a scammer.

Anyway, uniochange please consider my suggestion:

1. Never send any payment base on telegram communication it will be best if you can add live chat on your site and stop telegram communication.
2. Never send payment to the sender or the ordered wallet. If the sender is crypto then verify the refund wallet over email.
3. You mentioned 24/7 service but base on the feedback it seems manual. So, mention it is manual or provide auto service.
4. If your service are offline then mention that your service if offline.
5. If you cant perform the transaction for network issue or something else then refund by the same method by which order placed and do it as soon as possible.

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I am changing the title as solved. But will lock the thread latter as you or someone may provide their opinion.