Impossible to get hold of Cancellations Department

Impossible to get in contact with the Cancellations department, you cannot phone them directly and they do not respond back to your emails. According to the terms and conditions of July 2019 when I have signed up, I have signed up for a 24 month contract and it stated after 24 months you keep the router, if not, you pay the outstanding R800 and something amount due for the router and still keep the router.

Since then, they have changed the terms and conditions to a month-to-month contract and a free-to-use router where you have to give back the router when canceling - and I am being told by Customer Services I have to give the router back if I canceled by month 24 or month 23 (currently) and they force the new terms on conditions on me which does not apply to me since I have signed up under a different contract.

So I just want to sort this nonsense out with the Cancellations department, but like I said, it's impossible to get hold of them, even if Customer Services guarantee me they will phone me in a certain time twice and they do not contact me both times.

I have heard that a cancelation was logged against my account, but I have not requested a cancelation, I have just sent a query about the router to the Cancellations Department :/

Can the Cancellations department please contact me by phoning me ASAP? And I am keeping the router under the contract I signed up for in July 2019 ;< Customer Services also told me I have to pay in full if I wish to keep the router when canceling by month 23 or month 24 which is nonsense.