HDFC Bank — home loan balance transfer application processing fee refund

Address:

HDFC ltd, 104, FIRST FLOOR, SOLITAIRE BUILDING NEAR AMIN MARG JUNCTION, 150 Feet Ring Rd, Rajkot, Gujarat 360005, Rajkot, Gujarat

I have applied for home loan balance transfer in hdfc and deposited rs.2400 aprox as processing fees. The loan application was rejected and it was told to me that processing fees will be refunded within a week (This was told on 28.12.2019) but till the time didn't receive the refund. Hdfc representative is not responding on the same.
I have also lodge complain on hdfc portal on 23 dec, 2019 and the number is-hbl=[protected] but till not resolved.