@Anna9942 If it was you who cancelled the booking, before you contact customer service, you should go read the cancellation policy on the listing you booked. If you cancelled, its very likely that the conditions of that policy mean you are not eligible to receive any refund.
Guests don't just get refunded in full if they cancel or don't show up- refunds are subject to the cancellation policy in place.
As you appear not to have understood that when you instant book a place, your credit card is instantly charged and the booking is confirmed, I fear you may not have read up at all about how things work on Airbnb, how to book, how refunds work, etc.