Sorry, but you must retarded. Monthly PnL is available. Login to the website, go to My accounts -> My other info -> Penson Resources -> Reports , then choose PnL report. Have the report email to you for a calculated PnL. Obviously the rep you spoke with was mistaken. Anything else you want to rant about that they already offer?
How about this one ?: Took them FOREVER to get their Java-based trading platform working properly. Then, they could never sanction anyone to use Java version 6, all users were stuck at the ancient version 5 and all of it's bugs and slowness. I never got a rational explanation for this.