Bad Service and BP Rewards always offline

I am a regular customer at BP William Nicol (Winnie Mandela). They are currently running a competition on the rewards card to win a Mini but on two occasions now the BP rewards were offline as well as the Pnp Smartshopper rewards. Why running a competition when your system is always offline? This is the only reason I am filling up at BP garage, but I will no longer be doing so, I am even prepared to lose out on double points for using American Express Card, because of the bad service I am receiving.