MTN SERVICE DISGUSTING

MONDO & MTN ********* MONDO & MTN are **********. They do not even deserve one star!I I received a call from "an MTN consultant" telling me I qualify for an upgrade on 18th of Feb 2022 and after spending almost 40 minutes on the phone with a person that knew all of my details. She told me that my phone would be delivered within 7 days. Today 23rd , I receive a similar call from "MTN consultant" telling me I qualify for an upgrade. After me telling this person that upgrade is already done, she tells me that there is nothing logged on the system, and I must call 135. Call 135 and I get passed from pillar to post 5 times..... I get thru to a person working for Mondo , I only find out that they are not even MTN consultants and that my upgrade was never done, the "so called recorded call" cannot be found and their systems are down. MTN consultants refuses to help and tells me that I ahve to pay an upfront payment of R3000 to do an upgrade because I don't qualify. Does MTN know that giving my details to a 3rd party is against the POPIA act????? these people know all my details/???? and did not even properly identify themselves that they are from a 3rd party ???? No one at MTN seems to be interested in resolving and getting to the bottom of this...........totally disgusted after being a customer for almost 20 years. I hav no answers .....................