Jenny internet debiting my bank unauthorised when contract ended years back

I had Jenny Internet 2021/2022 out contract is was for 12 months , when our contract ended we didn’t renew the contract as the internet was always giving us problems, slow, pending. They agreed that they will come collect their equipment, they never did, 2 years later we get a unauthorised debit order from jenny saying we still using the internet whereas it was disconnected 2 years back. We called several times, they apologised and said they will send a technician to collect the equipment but nothing . Now they are busy sending message like this Dear Client

This is an account update and reminder. Please make payment to avoid service interuption.

*** Amount: R 678 Please use link: https://jdfe.co.za?s=YwzUZcYR

Jenny Internet www.jenny.africa http://jdfe.co.za/?NvobE0LY

It seems like they are now ****ming their previous clients because they have our bank information