I purchased an INTEX inflatable airbed at Shopko on March 7 for 39.99 which was a 20% off the regular price. I also used a $10 coupon which I had from purchasing 10 presciptions from their pharmacy.
On March 10 the same INTEX airbed was advertised as 40% off. I took my receipt to Shopko to get an adjustment / refund since the airbed was on sale for even more off than I originally paid.
I was told I couldn't get an adjustment/refund because I had used the additional coupon from business in the pharmacy.