bad bad bad bad news worst service

I am now fed up with the people working in the accounts department at MYI WEB (Hitec Sure) Joshua to be specific , I had a 24 month contract with them and cancelled in 2019 yes I did send an email, they convinced me to move to a month to month contact so I signed a new contact ONLY the first page as the terms and conditions page did not stipulate month to month so now 7th of Aug I cancelled again( again sent an email) and moved to Vodacom the service at Hitec is so bad always off or signal so slow, so 2 months down the line a Joshua phoned me and said I owe them 3months payment?????? Up and down emails sent but the people there is just as slow as the connection, I asked for my activity log and wow I only used the service up until the 28th of Aug 2020 so I said ok fair enough I will pay up until that date, now I must hear I must pay a cancellation fee and what nonsense DO NOT EVER use these *****s in your life they have the slowest most high paid internet and the people is rude don’t know what they are doing. They will not receive a sent from me I have offered to give me the Pro Rata amount up until the 28th of Aug 2020 and Joshua from accounts this bluntly ignores my request and keep on asking for the cancellation email that is also strange because he phoned me over a month ago and I told him over the phone ALSO that I cancelled but still they are running a bill for me, sent him all my supporting documents and emails and still I will take this to ever social media site I can just to warn people