OnePlus India — Oneplus store sales person rude behaviour

Address:

One plus store, prozone mall , saravanampatti, coimbatore tamilnadu

I purchased one plus nord 2t 8gb, 128gb storage in OnePlus store (prozone mall) saravanampatti Coimbatore Tamilnadu ... The sales person not explained about the offers, exchange etc...after final billing completion they are telling me about exchange offer, but sales persons not given me options about exchange offer before purchase, after that they are telling my exchange phone f41 samsung they won't take as a exchange i asked them can u show the notification where one plus is telling not to take this phone as a exchange ...they behaved very rudely...i need an explanation and proper answer...i need my exchange money back. Poor behaviour by manager