What are we chasing?

What a bunch of incompetent buffoons:

Match officials had to stop play in unprecedented circumstances soon after Bangladesh began their chase in the second T20I in Napier, as they were unsure what their actual target was. Play had to stop nine balls into Bangladesh's innings against New Zealand because even then it wasn't clear whether their revised target was 148, 170 or 171.

This surprised me:

"[When we met the match referee] they were still waiting for the printouts and calculations to take place. I think if you are waiting, the game can't start before you get it. What was explained now was that they normally get it one or two balls into the innings, but hadn't received it yet. They were waiting for it. There were delays and all sorts of stuff. No excuses [for the defeat], but this is just very frustrating for us.

Why don't the officials and the playing teams have a simple software program that shows the dynamic par and winning scores as the first innings goes past the ten overs? Why the hell are they "waiting for the printouts and calculations" in an international game?