Plagiarism - Someone is copying my content. What do I do?

I remember reading in the past other posts about plagiarism and I don't believe that this is also happening to me.  I discovered this morning that someone is copying my recipes as well as some other food bloggers' recipes and probably all the other content is also stolen.  He/she started his blog in April (eight days) and has copied 173 posts.

I left him/her a message to remove the content.  What happens if he/she doesn't?

I will appreciate any help if you have any experience in similar situations.

Update:   I think I have managed to suspend his/her blog (or at least I thought so).   I wish to thank Peter Georgakopoulos, Nuria Ferrugut and Marianna Kavroulaki for helping me out on this.

My son Kyriakos looked into it as well and sent me this very informative link.  I e-mailed him but the email returned as undelivered.  Then I contacted his hosting company explaining the situation and it seems that they have taken immediate action.

Thank you very much.