Terrible Service from these ******* *****ing clients money

I canceled alarm service with them at the beginning of April for my mum. Was told to send an email which was done on 08/04/2021. When contract was signed it was confirmed by sales rep that it is a month to month contract that can be canceled at any time. This was only for monitoring service as we used our existing alarm system that was already installed. They continued to debit my mum's account right up to end July 2021. I received a call sometime in June to ask if we requested to cancel service and I confirmed to the lady who did not give her name that it was done so telephonically and via email in April. She then ended the call. When I queried with the bank on the debits submitted for National Security I was informed that the company indicated it is still an active service. I contacted them last month and spoke to a Val Pillay who is in management. She was extremely rude and insisted nothing could be done. The company had a problem as the person allocated to process cancelation fell ill and was hospitalized. Therefore the error that occurred with account not being canceled. Val went on to insist that my mum had to pay for April and may because they needed notice period. I asked for my complaint to be escalated to someone higher than her and she says she is the manager. I asked for her manager. She then said she will refer coming and I will get an email in 24hrs. That was end of July and to date got no response. I called on 11/08/2021 and asked to speak to Val's manager and explained I did not want to deal with her due to her terrible service and attitude. I was put thru to Nolen the admin manager who sent me his email via test mail. He confirmed that my mum is due a refund of R1313.40 and he will request the refund to be processed which would be finalized by Friday 13 August. Nothing further happened and I sent an email after trying to call on Saturday, 14 August. On Tuesday we received a call from Val who said she was calling back as per Nolen as he was not available. She was going on with my mum who is Firstly hearing impaired so could not hear her clearly. I took the call as I heard her say that my mum owed for March and April and they can't refund her. I told Val that Nolen reconciled the account and confirmed the refund due to my mum. I said I did not want to deal with her because she was rude and unhelpful and she seemed to be forgetful of her discussion with me previously. So I asked if she was Val Pillay and reminded her of the discussion she had with me in July and her promise to send an email feedback in 24hrs which never happened. I asked her to get Nolen to call me which he didn't do till now. I sent him emails as well and he has not responded either. This company needs to be slapped with a huge fine and they should not be allowed to trade for the manner in which they have been *****ing money from clients. I have seen many other complaints on here pertaining to cancelation being requested and clients still billed. To add to it all our agreement was a month to month contract and Nolan confirmed the last signal they received from alarm system was on 01/04/2021. So if there was a burglary, break-in or emergency they would not have received signal to respond.