RNChick

I went online to get information about ONE college and they sold my information to other colleges (this is not illegal I looked) I had three call I said no thank you and that was the end except for ONE. This college calls me EVERY day, the first time I said I'm not interested, thank you, the second time I said please remove me from your calling list I'm not interested, the third time I asked to speak toa supervisor, I got "You are off our calling list we are sorry to bother you" then the very next HOUR after I spoke to the supervisor I get another phone call, I ignored it, then an hour later another, then another, for two days I got a call every hour, I finally answered asked to speak to the Dean of Admissions, they transfered me to someone who said they were the Dean I explained the situation I got an apology and "we removed you" well, two hours later, they called again, so far I have logged 28 calls from them. What can I do to stop them? Thanks!