Call centre

<p>Good day, i have had endless problems with call centres contacting me. I have mainly experienced this problem with Durban call centres...031 number. This specific number that keeps calling me is ********** 930, and when i do choose to answer the call, nobody answers on the other side or they drop the phone.</p> <p>i have blocked the number but the notification is sent through that this number has called. I'm not sure what to do, I just want it to stop.</p>