Debit order date unchanged despite numerous calls

I took out a loan with FNB on the 16/02/16 via an online application. I received an sms on the 18th notifying me that my loan was successful and that the money would be deposited into my account shortly. A date of 22/03/16 was specified as the debit order date. I then contacted FNB and spoke to M. Norris, to have the debit order date changed as I get paid on the 25th and was told to submit a letter from my employer attesting to the fact that I get paid on the said date. She gave me her email address so i could send her the letter once I had it. I emailed her the letter as soon as I received it and waited for a response with regards to the debit date but none arrived. <br> I then called the loans dept on 17/03/2016 and spoke to Stephanie Valaondaram, who told me to email her the letter and she would the have the debit order date changed. She said I would receive a confirmation of the change as soon as it was effected but to this day I am still waiting for that email. <br> Today again I called and spoke to G. Nkwane who asked me to send the letter. She confirmed the receipt of the email and said the change will happen tomorrow. This is very disappointing service for such a minor change.