All of our local LQ here do not honor sale price on cuts less then a yard.
They will cut less than a yard but you must pay regular price.
Be sure to check policy, every store can be different.
Not sure if this would have made a difference in your pricing.
Don't give up, give them another chance. Having worked in Customer
Service for years. You try your best not to let personal matters effect
your treatment of customers or how you sove problems. But like everyone else it does. So LQ might have been having one of those days.
If you continue to have problems then I would take my business elsewhere.