Inqmega cameras are *******. Banggood don't refund

Ordered 6 Inqmega wifi cameras from Banggood. Order received but picture always buffers and eventually breaks connection and can not reconnect. All 6 cameras don't work well. Using ycc365 app. Tried getting a refund from Banggood but they haven't responded and the call centre not much help either....... They trying to avoid the refund Dont purchase the Inqmega cameras...... Useless camera and ycc365 app not Good at all