Is all refund dead or just electronics?
As stated in title. I know for Apple devices they can track you down and have proof. Maybe other phones as well and tablets/laptops, since you connect to wifi. Or if you just sell the phone/tablet/laptop right after refunding it, what do they have proof of? Other than that, how are companies/carriers able to proof that you are committing fraud and not just genuinely having a problem with your order? I mean if you are consistently refunding the same stores to the same address that's a different problem.

and its no longer worth the trouble.