Have no idea who it is.

635-000-7540 keeps calling us twice a week we never answer and they don't leave us a message but everytime this number calls the same time same days. We don't have credit cards so stop calling our number.

stop these calls

Just to let these people know, I don't answer calls from hidden numbers.  Whoever it is can remove me from their list.  I will never respond.

we received a called from 635 000-7540 and did not answer. the call rolled over to answering service but there was no message.

who owns this number...they are calling at strange times