MTN SA is not protecting our numbers

MTN South Africa is careless with privacy of our numbers ******** performed sim swap with my number and requested money from people from my contacts through whatsapp i now owe thousands of rands from people who fall for the ******** but MTN could have protected my number better for me to do a sim swap it tedious but for ******** its simple if you want to join a new network do go for mtn such a ****. and they go around calling them selves boza network