Vodacom promoting *****

My mother has a contract with vodacom which she took in 2017, these year January there is a contract taken using her details and she knows nothing about that contract. Her *** number has been blocked for two weeks even if she was advised to pay the money in arrears amounting to R577.91. Her number is still blocked, uour call centre agents don't help. Can you please invistigate the ***** that took place and unblock her number