I lost my 2 sites, plz help..

Hi,
I was creating my 2 sites "domain.com" & "mydomain.com" but perhaps I did a mistake.
I used fantastico to create wordpress in 1st site and joomla in 2nd site but that same time I felt I don't need joomla on 2nd site, then simply I went to file manager and removed all files but I didn't noticed all the files for my 2nd site also deleted which was running well and Google already indexed that site.
Now earlier checked my both sites I think both are misconfigured.
One of my site was fully ready but unfortunately I lost everything.
Now again I used fantastico to upload wordpess on both sites but not succeed, something error coming.

I contacted with my host, but there is no reply.
Can anybody help me that how can I do fresh installation on my both sites?

Thanks for your help.

 

I removed my second site from addon section and re added but it says "An account with that login already exists. "
and when I try to install wordpress using fantastico it says:

The installation can not be completed:

I tried to remove these files manually but they are still there and not removed, I tried many more times but not succeed.
am I doing anything wrong?

Thanks