Useless no service centre to help me!!

<p>Bought a unpin voucher and did the whole story got the pin but it does nit want to load the munber on the unit and just says failed every time bought another voucher and it does exactly the same thing . There are no contact details to call comebody to just help me with this situation and now i dont have electricity for the last 48 hours !! Come on unipin !!! Please get an call centre to help us !!!!!!</p>