How do I change my voicemail password?

I can't get into my voice mail because i re changed my password, how do I make a new one to get into my voice mail?How do I change my voicemail password?Voicemail is strictly business. You can't change your passcode unless you know it.. The only way to get into your voicemail is to contact your cell phone provider.. They will be the only one that can reset the process.