My Website is blacklisted WHY ?

Hello, im the owner of ELLOY.NET and the  ip adress of it is 184.154.104.226 and since a week ago my antivirus  detect that my website is blacklisted ? im not a spammer and i dont  event know anything about spamm ?? all i know that im using joomla and  iv got hacked 2 times twice and backed up my website but i dont know  how to spamm or anything 

Now all i need is to know how to get my website back ? i mean to make it clean and remove it from the blacklist

Thank you