RCS Extremely bad service

So about two weeks ago a lady by the name of Stephanie phoned me from RCS to ask me about the payments that I made into their account. She said she needs me to send her the statements that I received from Norton Lambrianos Attorneys which came from RCS showing that no payments were made by myself. She seemed to know what payments I was talking about, but also wanted me to go to my bank to ask them which RCS bank account the money went into? I explained to her that there's only one RCS public account on my bank app and that surely RCS should know which bank account that is as they would've set up an agreement between my bank and themselves. She still insisted that I resend her all the proof of payments as well as the statement shots that I have received from Norton Lambrianos Attorneys showing no payments were made last year. I asked her to please send me an email requesting this as I had no pen or paper on myself. She said that she would and she confirmed my email address I am still awaiting her email When I tried to phone the number on which she phoned me I get an automated reply stating that the number I have dialled is incorrect So now a year later and still my payments haven't been reflected and what about the interest on that money as I am being charged interest?