ADT mixing clients' profile

I do cash payments with ADT and to avoid missing payments I did a stop order with my bank. Unfortunately my stop order expired in December. After realizing that I called ADT to settle the matter. They told me that I was actually R280 in arrears of which I paid it in full last month plus my monthly payment. Now I received an sms from a certain Eugenia informing me that my account is seriously in arrears. I immediately called and spoke to Richard because Eugenia could not be reached on the number she provided. Richard also was not clear on what is happening with my account. The problem is they never send me monthly statements and every time I asked them they send me statements belonging to a certain Mr J Madden. The customer number on Mr Madden's statements is exactly the same as mine (MAD00290). Last year I asked them why our number is the same and the said they do not know what I was talking about as that is impossible. I have proof in the form of statement sent to me by ADT. I also wonder if client information is treated as confidential at ADT as now I know how Mr Madden is conducting his account. I asked Eugenia to send me my statement but she did not.