Mastercard has blocked payments to Microsoft and I can't reach them to find out why

Trying to renew my subscription with Canva.com and Capitec tells me that my Mastercard has been blocked because Mastercard has blocked all payments to Microsoft and Canva.com. I have tried contacting Mastercard with no response at all. I need this subscription for my work! And no way to contact Mastercard to sort this out. I even private messaged them on their Facebook page. Their customer support number on their website doesn't get answered. So annoying