You will not be able to pay the Kotak or BoB bill of more than 1 lakh using Payzapp wallet. Please also note that no combos also possible. Also note that even if you pay partly by other means (like 50k through Cred), at all times Payzapp will always fetch the full statement of 1.5 lakhs for you. So partly paying any other means is also useless of using the wallet balance. I too faced same situation 2-3 months back. At that time I paid using cash only despite having 99k Payzapp wallet balance. From next time when I used the Kotak or BoB cards ensured that their statement will be below 1 lakh (around 99k or lesser) so that I can pay it using Payzapp wallet.
In your case, you can keep this money in the wallet to do like this from next month or if you need the funds I think a transfer to bank is available but the rate is 2%+ (i'm not sure of what the transfer rate, pl check that)