Vodacom - develop a cold call blocking technology please.

I am a bit annoyed that my provider cannot shield me from a menace that is driving me crazy. I am getting cold calls from only a specific range of numbers (+44 168 ***, +27 87 ***, +27 67 *** and +27 10 ***) and I keep on blocking each number that calls me. It will be insane for anyone to expect that I block all 1 million combinations of those numbers that call even if my phone has the capability to store all those numbers.

Can Vodacom not develop at least a way for a paying customer to block and opt out of all cold call numbers to stop this insane 1 - 4 cold calls per day from some rude as hell people trying to sell you Forex or some crazy Insurance or whatever.

I called the customer care line for some help and the person literally told me to block all the numbers manually??? You mad bro? Technology does what we develop it to do. Make it work, give me an option to log into my account and fill in a range of numbers I do not want to receive calls from please.