I had a fantastic experience in store buying a ole...

I had a fantastic experience in store buying a oled tv, but before completation of purchase we talk about possible price reduction in next days.
On the day after, another shop reduced the price, I contacted Richer Sounds as they advertise they will beat the price in next 7 days after purchase, but because I bought as finance they said they couldn't do anything.
The experience in store was great, but I would like to be informed about this in advance.