Meesho - Received Wrong Item and then they cancelled the order

I ordered a saree from Meesho App. After few days got a call from the delivery guy (Delivery Partner: Delhivery) and received a package. On that package, there was a receipt where all of my information like; my address and Phone number with product name and price were mentioned. All those information is exactly what I had given in the meesho app only. Only the order number that was mentioned in that receipt was a different order number. I received the product without checking the order number because all other information was correct, and paid the guy because it was a cod order. But when I opened it, there was a different cheap saree in that package. Then I registered a complaint on meesho and then after they canceled the product. And when I called they are saying we have not sent the product and you should have checked the order number while receiving it. And they said they are aware of this type of fraud/scam and they are removing those sellers and they will not help on the issue anymore. And they said I should contact the delivery partner.

And when I asked why they have canceled the product and they are saying the product was not in stock. But they cancelled it after I gave a complaint.

I don't understand how someone will get my address, phone number and order price that is only what I gave on meesho app only.