Incompetence

I took out a loan a few months ago.I settled the account at the beginning of August 2017. I was asked to send through the proof of payment.Which i did on the 4th of August 2017.I called in and asked the sales consultant to close the account.I was assured that the closure was logged. To my dismay,on the 15th of August 2017, the first monthly installment was debited from my account.I once again called in to query this. I was informed that the account was never closed. I asked the consultant to please log a closure as well as a refund. He then tells me that the "refunds lady" was not at work on that specific day?!? And i was asked to call back the next day after sending proof of payment OF A DEBIT ORDER.Well, i did as i was asked. Called back the next day and i was told that a closure was not logged the previous day either.I was a tad bit frustrated at that point and raised my voice a bit.The consultant tells me not to shout at her and hangs up the phone.Friday,the 18th of August 2017, i call back AGAIN!!!! The consultant tells me that because it was a debit order, i did not have to send in a proof of payment and he will log the refund and that i should receive the money by the 31st of August 2017....31st of August has come and gone and still NOTHING!!!! I called back on the 31st and i was told a refund had still NOT BEEN LOGGED!!!!I ask to speak to a team manager and i get put on hold for over 15mins.Eventually I call back later that day.Speak to a team manager who is extremely apologetic. She clears everything up and FINALLY a refund is logged.She tells me she has escalated my problem and that i should receive my refund in 48hours...Phoned in today, 4th of September 2017 and i am told that the refund will take between 5-10 working days to process. I ask to speak to a team leader once again and this time i was on hold for 30 minutes....I hung up and after a month and all MY airtime, the matter is still NOT RESOLVED!!!!!???