Unsatisfied ex-customer

I was with Morclick for 3 years before my contract came to an end. The service was very poor with slow internet connection often disturbed by weather conditions. The internet never lived up to the speed expectations. I spent numerous combined hours on calls with technicians to no resolution- so I decided to let it go as this was internet for EC rural where I only spent time during breaks. October 2024 came and the contract was ending so I got a call to renew and I said no, I'd like to cancel. I was told to write an email and I did. Never 2024 came and I was told I need to pay 1 month premium, which I queried because I had requested account closure. After another email I received, I told them to debit my account with the remaining amount. This never happened now my account has been handed over to the Bureau and nobody cares to respond to any of the emails I sent. The whatsapp helpline is slow and their telephonic line is no longer in use. So I am getting a bad record because nobody cares to respond to any queries.