Tired and unhappy with vox

I have had very bad experience with this company and I'm enough already, I wrote an email to cancel a month to month contract in September 2024 only to told my cancelation was received in October for them to extra bill my account. And have not received any confirmation of cancelations from them since now in April receiving statement for the month of March and interest, how does that happen no one has answers to why I'm I billed for March with interest without using their service. I paid subscription fee and paid for the month I've used their service knowing I can cancel any time because it's not a fixed contract and I'm not liable for any cancelation fee only to be told by some rude agent that I have to settle my account, donate my hard earned money to them.