Zepo Technologies — remittance not received

Zepo technologies is a courier aggregator. Ethnic collage, an e-commerce site has taken their logistics services for delivering our products to our customers and collecting the cash on delivery amount from the customers on behalf of ethnic collage. Zepo then remits the amount to the account of ethnic collage twice a month - first and third week of each month. They missed the remittance on two due dates - sep 15, 2019 and oct 8, 2019. We have been trying to contact zepo technologies but they are responding for the past 1.5 months. The total remittance until oct 8 amounts to rs. 74340. If by chance, someone from customer service answers our calls, they promise that the amount will be remitted by end of day. But, it's been 1.5 months without any remittance. Kindly look into the issue.