POS Machines never work.

I am not happy with Astron Energy at Eikenhof. Their speed point machines are always offline. I've been given a few vouchers to redeem there but they always end up expiring because their machines don't work. This fuel station is the most closest to me and very convenient for me to use but iam appalled by their never ending problems with the speed point machines. What is the point of having all these vouchers but I cannot redeem anything.