Vodacom deleted my number without my concent

I have had my cell number for more then 20 years , a loyal customer of vodacom and i went over seas on business and when i returned they have deleted my number . This number has been registered and reca as they always requested. I am losing a lot of business as this number has been mine for this many years . Now it would cost me lot of money to go and change my number on a lot of adverti*****t boards. Vodacom has not been helpful at all , i have been in branch and on call with call centre , every agent gives different wrong information and still i am without my number. This is the service u get for being a loyal customer more than 20 years . *** was my number Its a registered number . I did not give permission to delete my number. ***