this number always calling but not leaving any message

Keeps harassing me by asking for a Mr. Madrid..When said there is no Mr. Madrid in this house, then ask whether I need long distance calls (it looks like an excuse)..

Some Collection Agency.. keep wasting everyone's time.

I have my number for over 7 years, and at least I get 3 -4 calls from these people a week asking for a Mr. Madrid whom I do not know.

I have asked numerous times to remove my number from their database, but they  do not do so.

someone keeps calling but when I answer they do not talk. They call every day last 7 days

Keeps harassing me by asking for a Mr. Madrid..When said there is no Mr. Madrid in this house, then ask whether I need long distance calls (it looks like an excuse).. Some Collection Agency.. keep wasting everyone's time.I have my number for over 7 years, and at least I get 3 -4 calls from these people a week asking for a Mr. Madrid whom I do not know. I have asked numerous times to remove my number from their database, but they  do not do so.

Anyone else getting calls from this phone number?