Dg Shipping — correction of surname. i have put 2 times my surname in dg shipping profile

Address:

f-34a pratap vihar ghaziabad, Ghaziabad, Uttar Pradesh, 201001

I have mistakenly put my surname 2 times in dg shipping profile. I was trying to get things correct but on website they are saying that contact the institute who create your indos no. And then when i called my institute they said we can't help you and you have to mail dg shipping about your concern. I don't know what to do now pls help me next month is my visa and joining date and without correction i am not able to apply my cdc right now.