I've had similarly persistent recruiters contact me by email, and continue contacting me despite my having told them I'm not looking for new opportunities. The only successful method of getting rid of them has been the junk mail filter.
If this recruiter is contacting you by phone, your options are a little different. If he's calling you on your smart phone, you should be able to block the number (I know iOS has this feature, I assume android has something similar.)
If you live in a country that has a national Do Not Call list, you might be able to discourage these calls by leveraging that system.
With a variety of unwanted spam callers in the past, I've asked them for their name, the name of the company they represent and any employee ID they can give me, then I've explicitly asked them not to call again and told them I was recording the date and time for future reference. (I left it as implied that some sort of legal action would be forthcoming if they called again.) This doesn't always work, but it has had surprisingly good results over the last few years.
(I did, in fact, record some of these calls, mostly for my own edification. I haven't had any specific company/telemarketer call back often enough for me to seriously consider legal options, and I'm not even sure what options there are, if any.)