Please help

I am trying to delete all my posting, ads, pictures, and phone number, also delete my account here. How do I do this?! Someone please help! I am new to this, about a month in and this just isn't for me. Thanks in advance!! :-)

Get a new phone number.

Pics are probably there forever, unless you attached them here, or control where they are hosted, in which cases, you can delete them.

Ok.