VFS - Proof of Payment

i do have a problem with proof of payment. VFS insist on providing one however i didn't receive anything on email .

the payment was done through their service provider by entering card number then one time password then money was deducted from my account.

i didn't do cash deposit or EFT so i cant provide any proof of payment , i keep explaining to VFS and they keep telling me contact your bank,

seems like im not the only one who suffered from this issue , i wonder what will be the resolution !