Poor workmanship

I have since reported my pre - paid meter with the call centre on the 2015-07-28 (***), I then called in the following and they said they would put it as an urgent matter. My meter has been giving me endless problems, I can't load vouchers at times until I run of power and it also cant read the balance of the remaining units. Now I related this to the call centre agents and I'm still waiting which makes me wonder what the supplier regard as urgent.