Meesho — Worst customer service and product quality

Website:

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I ordered pack of 50 N95 Mask but i received only 25 pieces..i return my order but the courier person cannot take the package return because of the count mismatch of product, need to speak customer care executive for this, but i cannot find property customer care number in official website very worst customer service and product quality also. showing on the website is different but delivering a product is different. This is my 2nd time experiencing it. invoice and product image attached below. need full refund of this product.