FAILURE TO ISSUE SETTLEMENT LETTER

I paid up my Vodacom account through VVM, before agreeing with them I requested that they must immediately send me a settlement letter once the payment reflects in their account of which they agreed. That was Friday, 07 August 2015. <br> <br> The payment was done on Tuesday, 11 August 2015. <br> <br> When I called on Friday, 14 August 2015 for the settlement letter I was told by Mike Adonis that I will get my letter between 14 & 21 working days, no longer IMMEDIATELY as I was promised before making the payment.<br> <br> Why must it take 21 working days to write a simple 80 character letter?<br> <br> Why what I was promised before making the payment changed from IMMEDIATELY to 21 Working days?