Never use UNIPIN

I bought 2 x R100 vouchers this morning at 03h24 at the BP garage. The one worked, the other did not? How do you explain this??? I bought it at this time as we were away and got back and the power was about to run out. We have a little baby and need to warm up bottles etc. So now my wife is without power and need to get the baby sorted. The one voucher is not enough to keep her going as I am going away on business. UNIPIN doesn't have any support. I have gone the SMS route for support and the email route for support! NOTHING!!! This is also the second time this is happening to me from UNIPIN. DONT USE THIS COMPANY. I normally buy from pick and pay but sadly they are not open that time of the morning. UNIPIN can go fly a kite in future...