Customer Service is a joke

I bought a Telo from Ooma.com then realized that they sell the exact same thing in their Amazon store for $10 less, so I bought one there, thinking I'd cancel or return the other. The next day, Ooma customer service said the first one had shipped (it hadn't, only a label had been created), and said I could just send it back. Fast forward a week(!) when the first one arrived and they say I have to pay return shipping. They didn't even provide a Return Authorization Number, as I have requested several times. I contacted them yet another time earlier this week and was promised a prepaid return shipping label. Days pass, no label. Today, customer service says there is no record of that conversation. I am totally fed up. I've wasted an hour on the phone with customer service and been lied to again and again.