This is a complicated shaila which not everyone agrees on(some more machmir some more maikel) its an ask your Rov question. However the sefer Avnei Yashefei 1:63 explains the problems well and he comes out that using a katan to open the fridge to get something for himself and then you can take your stuff out,using a goy is more problematic ,see the tshuva inside.Regarding closing it is also a whole discussion .
