When someone calls my phone, it rings and rings and rings on their until the call just drops. They're never asked to leave a voicemail. Even if I dismiss the call on my end, it still continues ringing on the other person's phone until it drops. My voicemail box is set up as I'm still able to call into it, and I've never had an issue with it until recently. I've tried a few remedies others have posted, but nothing has worked so far.
I'm going to send you a private message to get some account info. I'm going to refresh some stuff on my side.