Game account

I have requested a settlement letter and settled my account on 08/05/2018. (R7141-06 as per the settlement letter). I have received a statement for this month showing that I still owe an amount on my account. I have requested a confirmation letter numerous times via email and phone, yet no-one responded. PLEASE UPDATE YOUR RECORDS and send me the confirmation letter that my account is settled and closed. Account Number: ********** ********** 95799