Homepage disappeared while editing it

Hi
I’m new to the forum even though I have been running my site https://www.misociety.com.au of a year. While editing my homepage it disappeared. On the live site all that is showing is a list of ‘comments’ send by readers. I paid for my hosting company (Webcity) to install their back-up and this has not happened. I have myself to blame as I did not back up the site myself. I am desperate this is a year’s work! Grateful for any help and willing to pay.