Loyal Customer Spammed multiple times a day by DSTV numbers

Feel like taking MultiChoice to court for being a Loyal customer as I am spammed daily from 8am until 6pm with calls from MULTIPLE numbers starting with 011 018 or 011 017 and are all identified as dstv funeral or dstv sales consultants. It is extremely frustrating as one is harassed by these calls that drop if you do answer. PLEASE SORT THIS **** OUT and hold the people who do this accountable