While the equipment is subpar what did you expect? You wanted them to give you a new one? They offered you a discount. This is how it goes with electronics. They break and malfunction. If you bought it in store or amazon you get the extended warranty.
The people complaining must not realize this is direct from china shipping. Not the quality control outsourced stuff. It's cheap chinese clowns. Also look at shipping times. Yes be prepared to wait up to a few months. You get what you pay for.