pay on time but ekurhuleni takes 2 weeks

i pay my water and lights statement always on time but some how ekurhuleni takes more than 2 weeks to update their records, i have payed the water and lights account on the 31 August 2015 and to my schock received a final notice of payment not received on the 2 September 2015 as any electronic payment only takes up to 48 hours to reflex in their account . i took the time and waited as ussual 2 hours in the que just to get told by a consultant \ if you dont pay its not his fault "i tried to explain to them i have paid and even provided proof of payment plus my bank statement that the payment has been made but no luck it seems like they are in charge there and not to assist to try find out as to if there is a delay on their side but NO its easier for them not to assist.The same incedint took place in June 2015 when i payed on the 29 June 2015 but they only credit my account on the 16 July 2015.If they cant cope to update their records they should employee staff than can assist and not to shunt the consumer around"