Simply call us at +44 (0)800 098 8136 and speak with one of our friendly customer service representatives at any time. Please be ready to verify your account number and billing information as it appears on your account. You will also receive instructions on returning RingCentral desktop phones, if you used them during your trial. Phones used during the trial must be returned within 5 days and in good condition, otherwise you will be charged for the devices.