Supersonic are are bunch of ****mers

I was a client of the internet provider Supersonic in 2021, where I cancelled my subscription in May of 2021.

Supersonic telephonically confirmed my cancellation and the fact that there were no more funds to be paid beyond May 2021.

They collected their router a couple of months later. I did not have any communications with them at all. No calls were made to me whatsoever. In November 2023 , I received a sms from them saying my account was cancelled and that a urgent payment is due . I ignored it as I thought it might have been a **** or delayed system error ,and Ignored it , only to receive a letter of demand from their lawyers yesterday.

I reviewed the notice, and checked if my last payment was made in May 2021 , which it was . Upon reviewing their website , many other consumers have complained regarding the same issue ( Charging post termination) . The last communication sent from them was this morning for the first time indicating a bill for July 2021, which was billed without concurrence ( June 2021 ) and never communicated. I requested a call back from their lawyers which I did not receive, and furthermore , I requested my call records with supersonic which was also not sent. They did not send me any requested information beyond an invoice .

I got an email from supersonic apologizing , saying their invoices are sent out on mass . 3 years later only ? Please . Straight to a lawyer letter demand and not even a call or email . Pathetic . Do not use this service provider !!!