Referal credit after rebooking.

[LiveLocal0]

First I booked to stay for 2 nights and applied with the credit from referral 950 THB, overall I paid for 1426.30 THB in  Dalat.
But things change, I re-booking to stay just for one night then I think, I suppose to pay only with amount of 1 night include 950 THB but it won’t show up for discount just the price different.
Then I paid but it charged me via my credit card with the first price for 2 nights.

Then my questions are...
1. Do I have a right to rebooking with my own credit referral ?
2. Will they gonna pay back for my rebooking ?
3. Will I get my credit referral back ? For my term I think I should get this back because I do nothing wrong just rebooking my stay. 

[Emiel1]

@LiveLocal0 

What do you mean by "re-booking ?". If you have made a reservation and want to change it (for example lshortening it), then use the change option. Do not cancel and make a new reservation. Travel credit can only be used once, if you cancel it is gone.

https://www.airbnb.com/help/article/1367/how-do-i-book-a-trip-with-travel-credit-from-referrals

[NguyễnQuốc0]

When did you change your booking? How many days before your stay?