AT+T iPhone X cannot connect to a specific number (fast busy signal / call canceled)
I tried to book an oil change for my vehicle at a dealership that I frequent. I cannot connect to any of their business numbers... service Dept., Sales, Parts...etc. I always get a fast busy signal and it says Call Canceled on my iPhone X info. There was a recent apple update 16.6 version. I've been on the phone all day with AT+T with various techs, reset my iPhone numerous times and still no resolution. I've even called all the businesses that share the parking lot with the dealership, and have had success connecting to them. Any ideas of what happened? This is bizarre to say the least.