Lack of service delivery and after sales

I am formally submitting this complaint due to Matrix’s blatant administrative negligence and the ongoing harassment I am now subjected to. I cancelled my Matrix account on 17 March 2024, and Matrix confirmed the cancellation on 4 April 2024. As part of this process, I paid an unjustifiably high termination fee for services that were no longer being provided and lack of service delivery. I settled everything in full, and the matter should have ended there. Yet, more than one year later, in July 2025, Matrix suddenly claims that I owe money for an April 2024 debit order. This alleged debit order would have been for May 2024 services, even though: • My debit order always ran on the 25th of each month, • Billing was in advance for the following month, and • Matrix had already confirmed the termination on 4 April 2024 and charged me a termination fee. In other words, Matrix is now attempting to bill me retroactively for a period after the account was cancelled and paid up in full. This is not an oversight—this is a serious administrative failure on their part, and I will not be held liable for money that is being invented long after the fact. I demand the following without delay: 1. Immediate removal of this fabricated amount from my name; 2. Written confirmation that my account has been correctly closed since April 2024, with no outstanding fees; 3. Full removal of any negative listing, internal or external, that may have resulted from Matrix’s error; 4. Confirmation that this matter is permanently closed, with no further harassment. Matrix’s incompetence should not become my financial burden. I have fulfilled every obligation required of me, including paying their excessive termination fee. The current situation is wholly unacceptable and must be resolved immediately. I expect urgent written confirmation of full resolution.