Zoomcar — Traffic challan fee refund

Hi, I am Zoomcar host, my vehicle was on booking with booking id JPSN7DOSW on 30th July and Rs. 4000 of traffic challan was generated during booking. I paid the challan and submitted the receipt for refund within 30 days. Initially they mailed that refund has been raised but not they are saying that we can not process your request as it was settled within 30 days, this has proof... why should i pay for the challan for the Zoomcar guest.