Us visa appointment scheduling not showing up on new website

I paid my visa fees in February this year and did not schedule my appointment the appointment I scheduled earlier I cancelled it in march so there was not appointment schedules as the website has updated now. It shows I have paid the fees but does not give any option to schedule a new appointment. It show option for appointment confirmation but there is no date on it just show my application number and pick up location. How can I schedule my appointment now? I have been calling the customer service everyday but no one is lifting call please help if anyone has solution for this