MWEB Incompetence

Called their call Centre to switch from pre-paid to debit order and it took a week an a half for them to send a link to add my banking details, the transaction was still pending. I decided to pay via my banking app using their banking details on the monthly statement they sent. I called their call Centre in the morning because my fibre was still disconnected, only to find out that they changed their banking details without notifying me (customer) and they'll reimburse the amount after 3-5 working days in the mean time I don't have any internet connection.