RBL Bank — insta cash not credited

Address:

Opposite Poly clinic, Near Sai Kutir, Cuttack, Odisha, 753008

They claim to provide insta cash. However the amount has been credited from my credit card it has not yet come to account since 3 days. What's the meaning of this insta cash. Useless credit card. Now i don't want this instant cash as it is already 3 days. But even after trying for so many times i could not reach any of their customer service representative.