*****ulent phone account from Vodacom

Hello Peter in 2021 I received a notification of R80 something rands that was debited on my account. In December 2021 I got another one for the amount of R1600 something which I haven't received back from Vodacom. In January 2022 again another debit went off. I thank reverse it. I thank contacted my bank they told me that it was Vodacom company. I went to the nearest Vodacom center I was told that I took a contract with them of which I know nothing about. They instructed me to make a police affidavit my bank statement. I was told to expect a call from them since they started the investigations. My concern is even today I still receive Vodacom calls from their lawyers. Please help