Disgusting by the services received from cellc

Poor service delivery. I have a month to month contract with cellc for fibre, firstly they responded about two months after the inquery , they delivered things to my house through a courier service and i was not informed about anything that was happening, they then sent an email with my invoice. I sent them another email and asked about these things they delivered and the debit order amount, i received an email days after informing me that case was resolved. This month i received an invoice which read, due date amount: 08 June 2022 yet today is the 2nd of June and the amount has been debit from my account. Upon applying for this, i am almost certain that i did indicate a suitable debit order date, till date i have never received any debit order mandates. The amount of inconveniences are actaully disgusting, you are pathetic , you cannot just debit money from someone's account without prior arrangements especially if you have sent a document stating when this money will be deducted. Please share my remaining account balance so that we can move forward with opting out of this stupid and inconvenience.