With God all things are possible

Please I need help I don't know where I went wrong Iapplied for a college and was denialed visa and my next interview is coming up
I approached the VO in US Embassy

VO GOOD MORNING
Me GOOD MORNING SIR
VO pass your I-20 and passport
Me I did so
VO WHY GREEN RIVER COLLEGE
Me why green river college is because it's ranked highly especially in my field of study and I was impressed with their faculty profile and course curriculum and their curriculum is very much similar to what I want to study.
VO HOW DID U LEARN ABOUT THE SCHOOL
Me I learnt about the school through their representatives here in Nigeria called interoversea text limited
VO AGENT OR CONSULTANT
Me they are just representatives of the school
VO DID U APPLY TO ANOTHER SCHOOL
Me no sir



And I Was offered the blue letter of denial, please were did I go wrong I need help