Provider's Location - Access

[bigmango]

You arrive at the door of your provider's apartment block at the appointed time & are about to phone her when someone opens the door and leaves it open - do you enter
(OR would you wait until you had contacted the provider first.)

This happened to me earlier today and I phoned her in the lobby when there was nobody else around - she went ballistic
Her problem was that she had not given me the door code, So I was not who I said I was.

I had used the same phone over two days to exchange 6 or 7 texts with her about the booking

My question is - Would you enter the building, or would you wait until you had contacted the provider first.

Comments appreciated from both punters & providers - thanks,