Myntra - Returns

I have done shopping for ample of items.
Every brand shows diffrent size guide.
For same i hve also mentioned size n fit size as return reason.
Anouk brand * tops fit me well, some had size issue i could exchange it.
Similarly same brand same size another dress did not fit me even after ordering / exchanging twice.
Because of product incorrect size guidelines, i had to return.
Everytime i select any time your page pops up message recommend L size according to past experience. guides .
My busty size is ** so i select size **... Which on site for every brand will show diffrent variations M,L,XL, .
I ordered, upon receiving they don't even go beyond neck.
Whch means your website is showing wrong size.
Similarly i ordered two sizes for biba.
Keep the one which fits me and return the one which is not required to save on exchange and delays as I wanted to wear it.