Managers 3 (ignorant and defensive)

Customer tried to port over their iPhone and use their iPhone with us. So we need access to port it in our system. Our manager on duty is said to have access but says he doesn't and our technician has access. So the manager says he doesn't and technician says he's to busy. So my coworker calls it in to have it done remotely. They say they can't do it. So I text another manager to have it done (nothing to even do with me I'm just trying to help my coworker get his sale) meanwhile he tells our manager on duty to speak with the people who do it remotely to find out why it's not working and the guy who needs help keeps taunting the manager like he will hang up the phone. So they finish the call and start yelling in the back room. They are so loud customers out front are wondering what's going on and walking out of the store saying they are going to our competitor. Meanwhile his customer is still out there and he has her phone. Like 10 min later they are asked to take it outside because they are to loud and our technician is finally free enough to log in and see what's going on. So I go with him and it says device not unlocked. Easy as that! So I go to give him the phone back for his customer and he give it back and says I should tell her and goes back to fighting. So at this point he's abandoned his customer so I explain what's going on with her phone to her and we come up with a resolution to make it better so we process it. Takes maybe 30 min to process but 20 min in they finally come out of the back room and stopped fighting and are buddy buddy again.... Great but that doesn't change the fact one guy abandoned his customer and the other yelled so loud people walked out of the store. Then like 10 min after he came out of the back he asks oh yeah where did my customer go as I'm working with her. And he's like really? Going to take my sale? I'm like.... Your ass abandoned her to argue about something stupid! You forfeit your customer when you abandon them. Not a usual occurrence bit I got some of it on video.