One of my newest customers was late on the first months payment. I called her about 10 times within a 4 day time frame and she never answered nor returned my phone calls. I tired calling her one more time and she didnt answer, I then called her with my girlfirends cell phone(different area code) and she answered after the first ring. I then said who I was and said " I havent received the bill yet from last month, I was just checking to see if you had time to send it out........" She then tells me that her phone has been acting up and sometimes it rings and sometimes it doesnt and that she never received the bill from that month but she did just get an invoice in the mail, could I please leave a copy of the invoice taped to her door. First: She answered when I called from a different phone. Second: She tells me her phone is haveing problems and I never ask nor complained about the previous calls. Third: If she got an invoice, what did she think had happened to the missing one?!?!?!?!? I taped the invoice on her door. What would you do? How long would you wait until you called her again asking about it? When would you stop cutting?