Flipkart — Product was not pickedup and the 11 days delay for pickup after approval

I have purchased an ARISTOCRAT Airstop 53- hardbody Trolly Bag (order id: - OD[protected] on 19 July and delivered on same day. On 20 July I has raised a Return request for size issue and ordered another size, and the return request was approved on 20 July. But till now the product was not picked up and the customer service was telling to wait until 3rd Aug. They are not sure about pickup.