teething problems

[libbyapril]

hope someone can help me I know nothing about I phones neither does my husband who bought me it to be honest I think the bloke who sold him it hasn't been 100% truthful got few problems hope someone can help 1) the silent button on side dosnt work when I turn volume down on settings it still rings 2) when I set up my apple id when I send an I message its my e mail address that shows not my name iv been to the list were e mail address is and phone number is and my phone number is not highlighted to put tick beside to use 3) voice control is very tempermental and dialling numbers hope someone can help its not the end of the world but very frustrating