Chicken Licken and Oil change story......

Last night I went to Chicken Licken Crest to buy hot wing snack and rock my soul 3, long story short is that, the wings I was served tasted great however the chicken was not what I had purchased, I called the store and spoke to Cynthia ( store manager), she advised that they had changed their oil hence the reason why the chicken was not HOTT, she further more said that if I had came a week later, the chicken would have been HOTT as expected. The responses I got from her got me very worried about what we as customers consume, and worst part of it, I never got an apology but she accepted when I said to her I am bringing back the chicken because it is not what I bought,

1. Is not a health risk to not change oil consistently ( twice a week or something)? 2. Since when did oil seasons the chicken? is it not for deep frying?