Welcome to owning a Clipper, I love mine!
Day 1 of ownership the same thing happened to me. Saw a job running gold. I accepted the mission. Flew to destination, dialed up the station to request landing, denied. I thought, ok, get closer to the station. Dial up again, denied, they don't have large landing pads. Crap!!! So I abandon the mission, pay the 80K fine. Next thing I know, I'm hauling illicit cargo. Ah crap is my next thought. Next thing I know, I'm getting scanned! Thank goodness I'm in the Clipper, 4 pips to engines and I'm out of their with no completed scan. Now I have to find a black market to dump my gold and recover my fine costs. I jump to where I know is a black market, 80 LY away, so I have to jump 6 times. Not only 6 jumps, but I have to fuel scoop too!!! Crap, now anyone can get me. I get to the station un-harmed, and now I have to learn how to fly this bad boy for a smuggling mission! 4 pips to engine, call and get cleared to land and I'm in with no problem! 160 M/S through the letter box! As I get closer to the letter box, 4 pips to system so I don't completely die if I screw this up! I land no problem, and sell my cargo!!!
All in a day's work for Commander Maximus Michael!!!
The system is not broke, just requires you to think through the mission set and come up with the best way to complete the mission!