RECYCLED MY NUMBER WHICH I HAVE BEEN ACTIVELY USING FOR MORE THEN 10 YEARS!!!!

I'm so frustrated and extremely disappointed in Vodacom. I have had my cellphone number for more then 10years and its linked to many things. I have recently found out that my number has been recycled! HOW????? when I've have only used this number and it has never been inactive. Their customer care line is useless they cant help as well as their branches, they just keep referring you to someone and nobody can assist you. I've been wondering why i don't receive my OTPs and calls because its going to another person which poses as a Huge risk!!! I need them to sort this matter out asap!