Endless hoops to jump through and multiple calls to try and Cancel with a Zero Comms company

Zero Communication from this company. To Cancel my supposedly month to month deal with them required a months notice (Billed again of course), and then you cannot just cancel via their whatsapp or call centre, you have to email them and get an automated response and that is it. NOTHING after that so you don't know what is happening. It took another 11x calls and each person I spoke to leaving 'notes' on my account which NOBODY reads. Accounts dept then also still invoiced me AFTER my device had been turned off for another month and their own call centre's advice was to stop the debit at my bank because their account dept. is unable, or inept at stopping or ending debit orders. A completely useless company in all aspects and should receive a zero star for their utter lack of concern for the client and zero acess to anyone in an admin or accounts department who can actually do anything useful. Their call centre has a call me back option. That took 3x days for a call back and then 2x days. Yet if you select the SIGN Up option when you call them you get straight through to a person happy to take your money.Just shocking customer service!