It's truly saddening to hear that you are considering cancelling one of your phones. We'd be more than happy to discuss this matter through our customer support. Our Customer Support can be reached at 800-922-0204 or *611 from a Verizon Wireless cell phone. We look forward to hearing from you.
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If you want to temporarily suspend the line, you can do that via your on-line MyVerizon account. If you want to cancel the line, you'd need to call Customer Service or visit your local Corporate Verizon store.