I went to Ralphs today, I am in NorCal NO triples

.... I was buying several things but in particular the Kens since it was on sale for $1.50 and I had a few more $2 coupons... Needless to say the cashier said she didn't know what to do... and the manager said... now listen carefully this is a good one...
"we won't take those coupons,
they are the same as cash"
What does that mean... I tried to explain to him that I didn't want them doubled, and adjusting them to $1.50 was fine, but nope, he didn't talk to me anymore... needless to say I had them cancel them, but what the heck....
Has anyone ever had this happen to them at Ralphs???
Thanks Melissa