This is n't a complaint about an ATTEMPT to collect the wrong amount, this is a complaint that it ACTUALLY happened. 

I settled with XXXX ( XXXX a debt of {$120.00} for {$100.00} and instead of withdrawing {$100.00} from my account they took the full {$120.00}. 

I promptly called them back about the problem and was told that there is nothing they can do until Monday XXXX XXXX. This happened on XXXX XXXX.