Bad system. Bought credit to call, but where the credit when I don't know. Called customer service but the lady kept arguing. This service is pre-pay not post pay. If I purchased credit to call, that credit should be placed on my account. But that stubborn lady told me that the credit went towards call I made yesterday. When I have to buy credit BEFORE CALLING!!! The system is pre-pay not post pay. GUYS MOVE TO REBTEL!!!!!!!!