Billed *****ulently

A consultant by the name of Rendani Phanguphangu answered my call on the 10th July 2023 and I told him to extend my rental vehicle with Avis and he said he sorted out the matter and communicated with Pro-line express. However today I get an invoice from Avis after I had filled up the vehicle with petrol and made sure all is in order . I am being billed for the days he failed to extend. I even have communication