Uniconnect Sim — Uniconnect the most expensive sim

I was using a Uniconnect sim for Australia and That turned out to be really expensive. I spent over 10k only to recharge the number. I dont know on what basis were they charging my calls because i was hardly calling.. I asked for details which they didn't share on the pretext that they dont have prepaid data. Anyways, m definitely not using such low quality services again.