Every month get disconnected

I have been using rain for months on end.there is no customer service or proper solutions set in place.I use rain for work.the card payment system is off.every month i get cut off due to payment not received.i have been a loyal customer.i even emailed to ask rain to change my debit order dates or change the way my payment is made.but to no avail nothing has been done.im cut off at the moment.i need austance to get back online.who do I speak to.what number do I call.i need explanations