********* behaviour from Netstar

I have been a client of Netstar for over three years. Their customer support was not very present throughout. But the worst experience came to when I cancelled the contract in October 2020 both by telephone and follow up e-mail. They never bothered to acknowledge the E-mail but the customer support person I spoke with said it was cancelled by as it was already the 4th of the month I would still be billed for a full moth as they required 30 days notice. OK, I accepted that even though it is the 21st centuary. But the ********* behaviour started when they continued to process the debit order on my account for December and January! I contacted them after picking up the January (I missed the December one) debit and resent the original cancelation mail from October. Once again they have responded they need 30 days notice. It is quite clear they do not read or understand their clients requests! Or maybe they just do not care?