Hello Miss Lee... Is this a good time?

I keep getting sales phonecalls on my mobile. =_=
Almost 5 times a week.

A couple of weeks ago, this bank told me they would update my XYZ card. Then it came with another card which can do this and that... and with like 300 passwords.

This has to be crazy.

BM: Hello?

X: Hello Miss Lee. This is X from ABC Bank/Insurance company. Is this a good time?

BM: What is this about?

X: ABC Bank/Insurance company is having a promotion/ has a new product...

BM: I am not interested. Thank you.

X: This is a special blah blah blah...

BM: I'm not interested. Thank you.*presses 'End Call'*

Please stop calling me. I do not need another credit card, funds transfer credit, overdraft, insurance... nothing. (Though I could do with some help for laundry, especially folding.)

Is there an opt-out option with the phone service providers/ law/ something/ anything??