i got my call at 10:24 am sunday ,last sunday...etc. I call back and get a recording saying it is a call centre , sorry we've missed your call

Today I've got a call from this number asking for Geraldine.It seems to me that this is a professional fundraising agency working with outdated lists.When I received a call sometimes ago, asking for Mr. or Mrs. Harris,I told them there is nobody with that name here. I also suggested themto update their lists.

this number keeps calling me constently and i do not know who it is so i do not answer. i answered the first time and they asked for someone with a J, i figured wrong number so i asked them not to call back. they didnt for two weeks and know they keep calling and its annoying.. and when i call back it says you have reached an information line and so on what can we do about it

this number called left no message checked the number out it goes to a call
centre do not answer if you get a call from them.

I have received a number of calls from this number.  Finally I decided to answer and as long as I wait, there is nobody on the other end.  I have called back 4 times and left messages each time to take me of their list.  They have called on Sundays as well - is that not illegal?