Why am I still being charged after deactivating my account?

Hello, I started using shopify with the one dollar a month code to build my website. About a month and a half in I decided that I no longer wanted to continue building my website and deactivated the account but 2 days ago $40 was taken out of my account. I’ve called the shopify number, no one’s picks up and I’d like to get the money back if I deactivated my account.