Welcome to the community, @KateE
Thanks for raising this to us. We did an aritlce that you may find helpful, this will guide you a basic troubleshooting about home phone issues, please see the link below.
If the issue still persists, please send me a private message with your account details (Username/Customer ID together with the address on file) so we can proceed with initial test and investigation.
My monthly account fee was debited from my account days ago (debited twice actually), however I am unable to make calls still