No. Always contact Curve to dispute any purchases made using your Curve Mastercard®.
If you raise a dispute directly with your Bank/ Card provider, your dispute/ chargeback request will come through to Curve rather than to the merchant you are in dispute with - this will cause delays in the process resolving your chargeback request.
“Mastercard is a registered trademark, and the circles design is a trademark of Mastercard International Incorporated. The Card is issued by Wirecard Card Solutions Ltd (“WDCS”) pursuant to license by Mastercard International Inc. WDCS is authorised by the Financial Conduct Authority to conduct electronic money service activities under the Electronic Money Regulations 2011 (Ref: 900051)”