STOP PHONING ME

I bought a toyota etios sprint last year (2017). I am planning on taking a extended warranty on a later occasion, but i keep on getting calls telling me about how much Toyota Financial Services cares about me and that i can take this policy to extend my warranty! I am sick and tired of getting these calls! I told the callers how many times to stop calling me! Today i received another call and told the person in no uncertain terms that she needs to remove my number again! How many times must i say this? TAKE MY NUMBER OFF YOUR SYSTEM!