Need spam filters for SMS and fone calls also..

A person whom I knew was in an important meeting.. he was discussing with another person seriously and suddenly his mobile starts ringing... he was guessing about the number and attended the call only to hear..'GOOD AFTERNOON SIR..WE R CALLING FROM XX BANK.. R U INTERESTED IN PERSONAL LOANS?'. For few seconds he was quite and after that his anger reached the peak and was shouting at that lady like anything..

First I thought this man was crazy..but later found the height of irritation whe I recieved such kind of a call to my Landline. There is no privacy to the data which we give to the bank..these banks have a network thorugh which they exchange the customer information. The person whom I talked about recieves on an average 10-12 calls of such type and atleast 15 SMS from unkown sources..Now u express ur grievances..