CBS Dallas-Fort Worth spoke with Mayor Mike Rawlings about his frustration and the danger the situation poses for residents.
Police officials have used overtime to beef up staffing in the 911 call center.
She says the child's babysitter tried to call 911 for help only to be put on hold. Brandon's babysitter was put on hold for more than 30 minutes as the infant's life hung in the balance.
Stoddard County 911 dispatchers say sometimes they do receive ghost calls, but luckily their phone line isn't normally backed up.
"I said, 'Why you couldn't call 911?' She said, 'I am calling 911".
The city says the problem is 911 operators have to call back every number that registers as a hang up just to figure out if there actually is an emergency.
Brandon was taken to hospital by his mother, Bridget Alex, but died without regaining consciousness. It began discussions with T-Mobile in November to resolve the issues.
"We are leaving no stone unturned and those executives will not leave Dallas until we have figured out" the issue, a spokesperson said.
David Taffet, a reporter for the LGBT publication The Dallas Voice wants answers this week after his call to 911 was handled incorrectly resulting in the service hanging up on him while his husband lay dying.
"It's encouraging that T-Mobile will finally be sending top engineers to Dallas tomorrow morning".
The calls then appear on a dispatcher's screen as hang-ups. Callbacks to her phone from the 911 center went unanswered. "I need to know why my son of six months is gone, that's what I want to know". Reports aren't clear if this is exclusively T-Mobile's fault, but CEO John Legere told Dallas city manager T.C. Broadnax that the engineers would "stay in the city until the issue is resolved". The Dallas Police Department is now investigating the case, which may be linked to problems at the Dallas 911 center which has been overwhelmed with "ghost calls".
"I believe that what happened Saturday night was beyond the numbers that we've seen on this issue", Rawlings said. According to the Federal Communications Commission, in 2015, T-Mobile US Inc paid $17.5 million to settle a USA investigation of two 911 service outages from the previous year that prevented callers from reaching first responders for three hours. "Because at the end of the day, my son was still breathing, but had they come out like they were supposed to, my son would still be here in my arms".