These Rs. 2 + Tax charges would be in addition to IVR charges of Rs. 0.25 + Tax.
If you dial 345, you will be charged 25 paisas + Tax straight away. If you connect to Customer Representative Officer, you will be charged Rs. 2 (excluding taxes) plus the IVR charges, which are 25 paisas + Tax. So your total charges will be Rs. 2 + Tax Plus Rs. 0.25 + Tax to seek help from your own operator.