Fed up Vodacom Customer

Good day i have been using my Sim card for almost 5 years and i have ricard my sim card, i received a message in 2017 that my sim card needs to be ricard, i went to Vodacom and i was told that my Sim card cannot be ricard as it is registered under simeone else, and they blocked my sim card from making calls, now im stuck with a sim card that i only use for Internet, i can not make calls, and also i cannot do a Sim swap, and no one at Vodacom is prepared to assist me,instead im being sent from pillar to post, like a headless chicken, this is really depressing, i ve been using Vodacom all my Life, now im so Fed up, with their Service im really considering Porting my Sim so i can keep my Number.