Things that I still do not understand

Yesterday I was reading the account of a fireman on the nursery tragedy . He claimed that nobody survived . "Mohsen, who described Shahboun as "a leader to us", said that all of the children in the nursery had died - "five in the ambulance, three at the hospital and the rest right at the spot."

Question one : how many kids were there in the nursery ? 

 initially they were talking about 20 kids out of them 13 died .. so it is for me now a total confusion

Question two : How the teachers did not call the firefighters to ask for help and describing their location when they were able to call to the Philippines ?

Question three : How nobody felt necessary to warn the nursery about the fire ...at least by phone

Question four : what was the staircase made of that it collapsed in the fire ? Was not it concrete?

Question five :How nobody felt the urge of informing the firefighters about the existence of a nursery ?


UPDATE

How many kids were there in the nursery ? - it seems that 13
Why did they talk about 20 on the first day ? I think they did not want to admit the ugly truth that everybody died there . It seemed this way as they rescued some

  How the teachers did not call the firefighters to ask for help and describing their location when they were able to call to the Philippines ?
 According to co-workers who should have worked in afternoon shift that day they got call from the teachers in the morning complaining about mild smoke .They were told to call the security who told them the fire was under control. How the teachers did not think they should leave  after all? Nobody likes talking about this topic. They died I know - it is terrible  I know but from what we know  at the moment the teachers were not recognizing  that they should act quickly . 13 kids and four adults / it was not impossible to leave quickly.If every teacher  had picked up two kids 8 of them would have been out .And there were bigger kids as well who can follow orders and leave on their own . Later the teachers called that they can not leave they need help .Why the co-workers who got this call did not call the firefighters ?Why were the teachers texting and calling relatives instead of calling the firefighters ?This question is still very confusing I do not see it clearly .

  There was an article in which someone claims that  there was enough time to leave.After the first light smoke 15 minutes had gone until heavy smoke came and blocked their way .
How those teachers did not feel  without any fire safety training that having even light smoke in a kindergarten is not OK and they should leave as soon as possible ?

How nobody felt necessary to warn the nursery about the fire ...at least by phone    the investigation did not answer  this ....  this was not the first fire in Villaggio  the nursery was not a new  one ... the security just told them to stay where they were... was this call registered ?

 what was the staircase made of that it collapsed in the fire ? Was not it concrete?  - I heard that it was made of aluminum

 How nobody felt the urge of informing the firefighters about the existence of a nursery ? no answer on this  the parents could not reach the firefighters they were waiting outside while trying to inform the policemen outside about the kids in the nursery - but there was the language barrier

  and there are more questions  about the missing floor plan , about the security who claim they did not know about the children  though this was not the first fire in the mall