What can I do if will is generated in a fraudulent way?

Respected, if you suspecting the WILL then you can challenged the same, before the Competent Court of law. Normally there is a limitaiton for challenign the Execution of the WILL. . In case if the Witness to the said WILL is able to prove its gunvinty you can proceed to file the suit. Before that, please note the point that you are questing the said witll withing time limit. You can contact near by any advocate to proceed with the case.