Nextiva are the worst! Terrible service! Cuts out all the time. On cancelling they are still charging my card a year later and claiming they got no cancellation! We are reporting it to bank as fraud! Dimitri their so called manager of customer service was sarcastic, rude, shouted over everything I said and had no interest in resolving the problem! As a professional business woman we have worked with many companies NEVER HAD THIS UNPROFESSIONAL FRAUDSTER SERVICE EVER They claim they keep recordings of conversations when I asked them to pull mine they said oh we don't keep them that long! Convenient! Apart from their horrible customer service in general the system is USELESS