I have made inquiries with the Central Bank about this matter which I understand relates to cases where a person can no longer afford to pay for the protection and/or has a claim rejected. The Central Bank has informed me that it does not collect this information and they are not aware that there is a particular issue in respect of this form of insurance that would indicate systemic failings in this area.
It should be noted that if a policyholder has a complaint about an insurance company not honouring a claim on a policy, they can refer the matter to the Financial Services Ombudsman for adjudication http://www.financialombudsman.ie/ .
My Department does not keep information on the level of default by insurance companies with particular reference to mortgage protection or life cover.