Intellicell just wants your money. Poor customer service and failed system

Struggling for a year to close my account with them and this after I have closed and settled my account in March 2019. Paid up letter received as well. However in the ITC I am listed as a bad payer (4 months arrears and overdue). Am being told that their system does not allowe to close as it is a monthly subscription thing. Bull****.. If it is closed it is closed. Spoke to a Shamiela Jafta who promised me the world in which one account will be migrated (closed) and the other has reached its end period and will be updated. This was June 2020. Checked my ITC and quess what, still the same. I contacted her again and she became rude (had to count from 1 to 10 and saying to herself let me do this before I loose my cool). Great FN customer service that is. Sent many mails and absolutely just being ignored., hence I referred it to my lawyers to resolve.