Thanks, but I spent what must've been hours (including before posting and more afterwards) searching various terms/ways on here regarding my concerns! I actually came across conflicting info about the charging through the usb, which is why I later asked about that after I was under the impression initially that it doesn't.
But that's not even my main question, thus the reason for me going into such detail about the whole problem. I was looking to know if anyone has had the same symptoms before they couldn't charge, as most problems I came across were ones in which they couldn't charge immediately or within a few months after purchase, or ones in which it sounded like the A70 device itself was busted. In the meantime, I got a hold of customer service yesterday and they're replacing the charger, so hopefully it will really ship out in "1-2 days." But if anyone has had the same issue with similar symptoms, I would like to hear if it was actually just the charger or something else.