Samsung Gear S3 Frontier and Voicemail

I have not been able to find this particular issue on the forums so forgive me if this has been asked. Ever since I connected my Gear S3 Frontier watch to Numbersync my voicemail has stopped working. When a decline a call or miss one, and voicemail should pick up, callers instead get a message saying "The customer is not accepting calls at this time". I have contacted AT&T several times and they have reset my email repeatedly with no luck. It started when I paired my watch to my Samsung S8 and has continued with my S9+.

Anyone know a fix for this?