Payment made not reflecting on municipal account

On 26 January 2015 I made a payment of R1746.01 for Kwa-Dukuza Municipality account at Pick n Pay Family Kemptong. I have been struggling with the Municipality to get this Credit and was advised today that they never received this payment and I must take it up with you. Previously I was told by the municipality that this will take 6 months to resolve but 2 years has passed without the credit to my account. I was informed by Sikhokele Mkuzo from Easypay to contact Pick'nPay. Since 27 June 2017 I have been dealing with Leonard, manger at the PnP at Kempton Gate in Kempton Park. Now another 2 months has past without success to recover my lost funds.