Site hacked with dozens of credit card charges

I have had dozens of credit card charges by Squarespace to my Squarespace account overnight. My bank has alerted me and blocked my card and I cannot contact anyone at Squarespace to resolve this issue.

Hundreds of dollars have been accessed and charged from my account and I need someone to contact me immediately!!

Does anyone know how to get in touch with anyone at Squarespace? 

Thank you, but hat takes me down a rabbit hole of pages but no contact with anyone. The email is no longer attended... is there any way to get in contact with a real person at Squarespace? 

Found someone... thank you!!