Bests & Worsts Reviews from Amazon

I have been drinking this caffeinated tea for over 10 years, always loved the strong flavor. I usually buy 6-12 boxes at a time as I drink every day. My last 6 boxes from Amazon seller had absolutely NO FLAVOR. It is weak, flavorless. Did the recipe change or did I get a bad batch? It’s basically flavorless. And yes, I brew as per instructions. Box embossed “ Enjoy by 29 JAN 20”; The box design is new style. Every box in my last order basically has NO TASTE or FRAGRANCE. I wrote Good Earth directly Oct 2018 to inquire if they changed recipe - all Angela from GET had to say was thanks for contacting us, for replacement or a refund we advise that you contact Amazon, will forward carton info to quality insurance. Has anyone else had this same problem? If so, has anyone found a close substitute to replicate the flavors from the old version of Sweet & Spicy [caffeinated]. I am so disappointed.