Vodacom resuscitates my ended contract 1,5 years later!

My cellphone contract ended in 2020, only for vodacom to resuscitate it in 2022 after a whole 2021 of silence. My contract ended in May 2020. I had been alerted that it was coming to an end. I opted to decline the offer for a new phone. I was still debited with lesser amount even after the time period had elapsed. No airtime was given as per contract agreement. I then called and was given a number to call and cancel. After this there were no debits. Only to be called one and a half years later to be told I owe Vodacom money. My advice is keep a copy of your contract even after it ends. Vodacom might resuscitate it.