DEBITING ACCOUNT AFTER CANCELLING A CONTRACT

I took the 101 router with Rain for my family and we noticed that the signal was bad at home and I brought it back with me here at Johannesburg. I was trying to find ways to return the router since I have fibre at my place. I was advised that if I don't pay, the internet will be suspended and they only reactivate whenever the payment is received since it's not a contract but a month to month service. I have decided not to pay end of June since I have fibre at my place and the rain internet was already suspended for July. I have cancelled the service on the 23/07/2024 and returned the router to rain store on the 24th of July. They debited my account today (26/07/2025) for R595 and when I'm querying the debit order, they stated that my account was in arrears while their enternet was suspended for the whole month of July. The sales consultant told me that it's a month to month service when I took the router and she stated it was not a contract as they only give you access to internet if you pay, and if you don't pay they suspend access to the internet, but she never mentioned that it's a contract. They told me that they won't refund the payment since I was on arrears for the month of July although they suspended my internet end of June and I didn't use the router or their internet for the month of July. Their business practice is ********* and they're not being fair to their customers. I have referred lot of people to them, I will make sure they cancel with them to advoid similar experience in future.