Delhivery — Courier boy picked up my order but did not update the status

Delhivery's courier person picked up my order which was to be returned to Ajio but he dint give me any proof of the same and did not update the status as picked up anywhere. I spoke to him on a number I received on message, he said he will update it in sometime but he still did not update it. I tracked it on Delhivery's website, its been 4 days it still says pending for pickup. Due to this, the status is also not updated on Ajio's website and I have not recieved my refund money. there is no way to reach any customer care person both on Ajio and Delhivery on their given customer care numbers. Highly unprofessional behaviour.