Contract Cancellation

I've cancelled my 3G data ****le on 1 Nov 2022, since the contract expired on 31 Dec 2022. I've received an SMS confirming that the request for cancellation was received, and my number will be converted to prepaid. When I received my Feb 2023 statement, I saw that the data ****le was still on my account. I phoned the cancellations department again, and the person told me that it wasn't cancelled on the system. I told me that I've already cancelled it on 1 Nov 2022 and even received an SMS to confirm the cancellation.

He told me that he will escalate it to his manager to investigate it and give me a credit.

Since today I've not received an email or phone call about this matter.

I want this to be resolved ASAP, since I've not used that ****le from 1 Dec 2022. I want credit for Jan & Feb 2023. It's not my fault that your systems is not working correctly.

I did my part and cancelled the contract in time.

This is unbelievably poor service, and I think I'm not the only one struggling with cancellations that's not cancelled.