Pathetic service

I regret getting a data package with Vodacom in 2020 during lockdown. I have been calling them asking them to cancel the contract as I no longer have the SIM card but no my Bill keeps on increasing and they are telling me it’s for the data I’m receiving. How? I have been telling their consultants that I don’t have SIM card in my possession anymore. I have been paying money, hundreds and hundreds for something I don’t even use and they are aware but they just milking me. Pathetic!