Settled account but advised account in arrears

<p>I dont know how many times I have forwarded the email with a settlement amount i was given and POP reflecting the date of the payment because i was advised that the amount was valid for that day. I supposedly owe after I was given a settlement amount that I settled. I have collections calling me non-stop due to this. I need this sorted asap! I asked various times for this to be escalated to a manager because we going around in circles. I am also requesting a recording of the call because I want to pursue this further as this can have a negative rating.</p>