Ecom Express — Regarding Order not received

Address:

UMARIA, MADHYA PRADESH

Hi there,
I have ordered a dress from "meesho" on date[protected]order no.[protected]Amt. 345 INR) in (Kaudiya, Dist- Umaria (M.P.) which was delivered to me on[protected] paid via cash to the delivery boy. But the dress was extra large in size then i raised an exchange request on[protected] the delivery boy has picked up the parcel on[protected] but return pickup message was sent to me on[protected]. After this i was waiting for the response when it was getting too late i checked my meesho order summary on[protected] and the parcel showing delivered on date[protected] but the parcel was not delivered to me. then i made contact to "Ecom Express" Customer Care No. "[protected]" with tracking id "[protected]" they said to me that they will contact me soon and resolve the issue but there is no resolution yet i have complaint the same 2 times but still no resolution. then i contacted the local delivery boy (name : Monu) (Mob. [protected]) of Ecom Express on[protected] he said to me that he has missed the parcel somewhere and marked it delivered. when i asked him for the refund or reorder the dress he started to argue with me and said 'Why did you complain to customer care ?' and refused to refund the amount. i have complaint again & again to customer care about this matter but still there is no resolution.
I want either the refund of my order or the exchanged product.
please look into the matter and provide me proper resolution as soon as possible.