It's closed today anyway mate so I don't know if there will be anyone there to take the call. If you dial the ticket master number it gives you an option to call someone for other non ticket related enquiries.
* Buy in person at the CCFC Ticket Office, Butts Park Arena, Butts Road, Coventry, CV1 3GE (Mon-Fri: 10am-5:30pm. Exc Weds: 10am-3:30pm) Buy over the phone by calling 02476 99 1987 (Mon-Fri: 10am-5:30pm. Exc Weds: 10am-3:30pm).