Account closure not updated

Paid up my Ackermans account at Park Central branch and called in at the contact centre to request the account be closed. I also requested a reference number of which Inam stated that they do not supply. Thereafter I requested to be sent a paid-up letter and was advised it would be sent via email within 48 hours. 3 days passed and nothing! Called in again and was advised the team leader would send it through shortly. Now I am receiving an sms stating that "a friendly reminder" that x amount is payable on my account. I am livid. The whole bunch is *********** and there's no answer at the contact centre!