How do I stop telemarketers from calling my cell phone?

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Tags

1. #unwanted
2. #still
3. #cellphone
4. #added
5. #against
6. #phone
7. #layer
8. #website
9. #register
10. #landline
11. #number
12. #enter
13. #smart
14. #calls
15. #protection
16. #donotcall