Not happy with cashier.

Hi I'm so disappointed with Cambridge store blackchain they don't respect their customers.i wanted to do money market was told it's not working since lotting I didn't have a problem I just told the cashier to write a note so we the customer must be aware yoh they were so rude to me they told me it's not they a problem cause they didn't loot,they don't no how to treat customers they need training.