I love everything about Vivint except your account...

I love everything about Vivint except your accounts receivable department. I have asked three times to be put on auto pay and two, as of yet, I have been removed for no appeArent reason and am no t notified of my bill being paid months later. I am on disability, therefore a fixed budget, and it is very difficult to pay three or four months at one time. Please Vivint get your accounts receivable department together