Exchange

Good day

I bought pyjama on Wednesday the 15th at mr price cavendish, my daughter wore them on the 16 and the stitches were torn in 1day.I took it back at mr price in ottery and the told me they can't take it back without the slip I had the tag with me somehow I lost the slip.Does that mean I'm stark with those pj's just because I don't have slip ad it's only a couple of days old?if I new there was a fault I would I have kept the slip.I emailed the complained department and they told me I must take it to any store with the receipt I'm not even sure if they understood my querry