Dissapointed

I am so dissapointed,, i went to jet to exchange new born clothes,,because they are small,,they still have price tags and in good condition,,,they said they wont do exchange for me because i dnt hv a receipt,,and if they do i must remember the date,month and time,,so unfortunatley i dnt know because it was for my baby arrivals last month(may) now am stuck with small clothes