RCS is a bad company with no system structure

RCS don't have a system they working from everyday a different agent call me to ask for payment and I tell each one of them the samt story.... Iade my final payment I've been sending proof of payments for more than 10 times. FINALLY I received an email stating they have received my payment and the same day one of their agents called me to say they have not received payment. I was ask from diffents departments to send the proof but calling me to ask for payment. I've had it with RCS this is going to far wasting my time and energy I'm stressed out and this is affecting my credit score... They have a **** system they don't follow up on my emails they call me all the time and that cost money for every call they make. I am so concern about credit score, my child is going to hight school and this will affect her from going to school. I hate RCS and their system. I ask for a paid up letter but they escalate my request and want to send a settlement letter, I do not want a settlement letter I paid my account and don't owe anything on the account. I am not happy with RCS service and system it's putrid