Hi Mr Green,
Thanks for your question!
fxglory.com are almost certainly unregulated. A regulated broker will always publish who they're regulated with on their site, usually in the footer, and fxglory have nothing like that.
You're doing the right thing by filing a chargeback, we have a guide to chargebacks here which explains the chargeback process: https://www.asktraders.com/broker-complaints/complaints-board/#guides-container
When you file a chargeback the card issuer has to refund the deposits unless the merchant successfully disputes the case. For this to happen they will need to provide compelling evidence that the case should be settled in their favour. What that evidence is exactly will depend on the chargeback reason used, but will most likely have to include things like proof of your ID and address, copies of any contact they've had with you (emails, calls etc).
And to answer your last question there's no way to be sure, as they're unregulated, but it's certainly possible. This is why we always recommend you use a regulated broker.
Hope this helps!
The AskTraders Team