Harassment from RCS even after settling the account.

So irritated, after closing the game account due to an aggressive collection process (basically daily harassment) by RCS triggered by my late payment of Jan Instalment, RCS is still harrasing me to pay Feb instalment, this is after paying a settlement amount on the 1st of March. I am receiving collection calls multiple times a day, today is the 8th, I called the 0861 number to check if my settlement is reflecting, the lady confirmed and I ask for the account to be closed. but a collection agent called me 5min after to get a promise to pay for My Feb instalment that was due on the 28th Feb. how is it that my name is still in the collection queue 7after I settled the account and the amount is reflected on my profile!!! This is madness, I have been receiving calls every day since the 7th Jan!!! I even logged a review for Game but they never responded so I am logging one for RCS hopefully someone will do something, this is harassment.