I have written RingCentral twice and phoned several times to cancel the service only to be placed on hold for up to 45 minutes. If I call to add service I immediately get to talk to a person, if I call to cancel you are on an indefinite hold. It is beyond frustrating. Only solution thus far was to dispute through credit card company because these people will not let you cancel, they will not answer e mails, or phone calls. Its terrible.