Solar Power Bank not the One Deal A Day you banked On

these online sales companies are not making it easy to contact them and when you receive a product that malfunctioned, they do not response to their customer service or admin emails and there is no telephone to call, not even on the sales invoice. one deal a day, is one of those online companies. My purchase is a month old and not one reply despite numerous web complaints logged and emails sent. fortunately it is a small value, but its the principle of the matter. Very disappointed despite having so many purchases with them.