TELKOM LTE keeps on debiting me for cancelled subscription

Account number :***. I have cancelled my LTE subscription on 3 Feb 2021, I have received confirmation that the cancellation was successful. Last debit order was deducted from my account on 31/03/2021. I have received my bill for April 2021 and yet again you guys are debiting me for the LTE subscription. I have put a stop payment on this debit order as I will no longer pay for a service that I have cancelled. Kindly update my bill and confirm that this was done. Please confirm that this was done via email, as I am in meetings and I cannot answer my cell.