I have applied for a UK VISA 3 months in advance and have mentioned that my UK arrival date is 15th Sept 2019. I also mentioned that I intend to stay for 5 months. Thus my return date will be mid Feb 2020. Now I received my VISA from 03/07/2019 to 03/01/2020. The expiry date is prior to my intended departure date.
What should I do to get dates corrected?