Delhivery — Pickup done but updated in their status as consignee rescheduled, and coming everyday for pickup

On 15th Aug, around 12 noon, I returned three Nykaa products. The pickup was by Delhivery. The pickup guy took pics of two products, whose tracking ID on Delhivery portal is [protected], however, he refused to take pic of the third product, Sugar jelly highlighter, whose tracking ID on Delhivery is [protected]. Since then, everyday Delhivery messages that pickup guy is coming. On 16th, I told him he already picked up yesterday. He said he is cancelling, but status on Nykaa showed Consignee Rescheduled. Since then, almost every day, their pickup guy is coming for the product, and putting any status but picked up. Their pickup guy also called me on phone, Whatsapp and messaged me on Whatsapp from his personal phone number. On Truecaller, his name is Sunder Bhagwane. When I registered complaint on Delhivery portal, their customer care told me rudely that who are you complaining of theft, and that if the pickup guy has done theft, then I cannot tell them that the product is stolen. They sent a mail, on 19 Aug, asking for tracking details, and pickup date and time. Post sending these details, they are still sending pickup guy and pickup messages. Today on 22 Aug, their pickup guy told me on call, to do a police complaint, and that they will take care of it. When I asked for his name to complain to his manager, he said he can't hear me. I put a complaint on Nykaa portal also, last week, however they have taken no action.