So my Audi A3 8p 2009 rear passenger door would not open from outside and only opened from inside. I identified it was the actuator so replaced this yesterday. After changing this the door opened fine from outside however it now wouldn't lock along with the rest of the doors when I pressed the fob. I then mistakenly twisted the child lock position as I thought maybe this would fix the issue however I now can't open the door from either outside or inside. I was wondering if anyone could help with this as I took it to a few garages and was told the door panel needs to be removed from the outside to fix it which is likely going to be expensive. Thanks.