Testing disputes to instant games purchases

[Reggis]

Hi everyone
I'm currently working on some Facebook Messenger Instant Game. We provided simple purchases, but i have no idea how to test disputes on it. 
On Facebook Canvas its really easy thing and we provided it previously in other our game. But on IG we don't have any options to create webhook or dispute test purchase
According to this article: https://developers.facebook.com/docs/games_payments/testing/ we would be able to create dispute using this https://www.facebook.com/help/contact/146600035918755 or this https://secure.facebook.com/settings?tab=payments&section=history&env=external link. But first does not show me testing purchases and second just doesn't work.
Is there any different way to test it?

[Noel]

@Regis I remember seeing your question on another thread (maybe our dev community page?). Did you get your answer already?

[Reggis]

Its possible see my question on every community channel ;)
So, I got an answer, but its very bad news. FB customer support enswered me:

Quote

That doc is for Canvas Games rather than Instant Games.

I'm afraid transaction disputes aren't supported for Instant Games.

You can share your feedback in the Instant Games Community group.

There: https://developers.facebook.com/support/bugs/532279863894801/?disable_redirect=0

And there is no option to get a refund directly by Facebook and we need to do it in another way (like redeem codes/bonus gifting).

[Noel]

@Reggis I see. I will communicate your feedback and update you then.