No acknowledment of my cancellation email

When I app**** for Fixed LTE, they were on the phone asap to get my details to deliver the SIM (although it seems like they wanted me to get the router, so I can be locked in a contract). Luckily I didn't choose the router.

After service is very poor. Taking forever to get reply on WhatsApp (I haven't tried calling, after reading the reviews it's just going to be a waste of time). Their client portal doesn't offer much, other than to top up, and maybe view your data usage (I had no luck with that, just showing nothing). There's also no way to cancel a product via the portal, unlike other ISP's out there that offer these by default. I've since then (2nd day after activation, after using the SIM for the 1st time) send a cancellation email, yet no reply or confirmation of my cancellation. I've also forwarded this email to *** and only got an automated reply with a reference number. Still no confirmation of my cancellation.

According to their website, a customer have a cooling of period of 5 days after activation, or can give a months cancellation notice. (point 5.4 & 12.1 under Supersonic Home Broadband F-LTE Terms and Conditions, here: https://www.supersonic.co.za/Pages/Termsandconditions.aspx)

Yet there's no acknowledgement from them that my cancellation is being processed.