Alliance collections settled no letter to prove that

Hi ive been a customer for wonga sa for quiet some time they have always been quick professional and always ready to assist but they need to get rid of their collections agency alliance i paid my account through them the full amount as settlement yet alliance keeps sending me from pillar to post and my account shows erreas even though ive paid they claim wonga is too blame they paid the money through to them wonga needs to allocate the funds when i phone wonga they dont see any funds ive done all i can im not happy can they resolve this so my account and trust levels back to normal on my account