Twinings Earl Grey Tea Leaves

I've been buying this for years; I brew about a pot a day, steep for 4 minutes. For about a year, I've really noticed a big decline in quality. Tea is full of dust/bits, not nice tea "strings", reviews of others on Amazon have noted same. I called the company in New York, the rep argued with me but sent me a "free" can; unfortunately, it was just as bad as the others I'd been buying lately. I tried a can of Taylor's Earl Grey, cost was quite a bit more, tea looked right, but I just did not care for the flavor so went back to Twinnings. Any advice?