how can I withdraw my btech course in vit ap. and refund
I don't know about the AP branch as it is new but i can tell you the process for Vellore branch. I think the process will be same for every Branch.
You just need to contact your Program Chair first then you will have to consult the Finance Department, he will guide you to the registrar and then few more process.
They will deduct 20 to 30% of the Total 1 year fees.
All the best!!