Banxa:

Please submit a request through: ‎‎https://support.banxa.com/en/support/tickets/new‎

Transak:

Contact customer service via live chat by clicking the icon in the lower-right corner of https://support.transak.com/en/

Mercuryo:

Contact customer service via live chat by clicking the icon in the lower-right corner of https://mercuryo.io/

Alchemy Pay:

Email to Support@alchemypay.org

Coinify :

Contact customer service via live chat by clicking the icon in the lower-right corner of https://help.coinify.com/hc/en-us/requests/new

Pix:

If you haven't received your Pix deposit yet, please contact BYDFi customer service.