Vulgar, Filthy Site

Someone who is stalking and harassing me posted an FILTHY ad in my name, posted up my phone number and my pictures which they had downloaded from my Facebook account. I have hundreds of men phoning and texting me with lewd requests. I contacted the Adsafrica customer service via email to notify them of the disgusting ad defaming me. They responded requesting information which I provided to them, but they still haven't removed it. I've had to change my cellphone number as a result but cannot retrieve the smut online in my name.