I've been Heartland Payment System customer for last 2 and 1/2 years. After about 2 years of service in the process of billing fee charged at the end of every month I've found this company is trying to distort its process and starts taking double charge from my account without telling or explaining before. When I found it occurred, I gave them call for explanation, they say the process for last 2 years was wrong and now corrected so, under their policy it starts taking service fee in advance of the month other than charging at the... read full review »