NIS needs to clarify whether policy has changed for pensioners overseas

Dear Editor,
As I understand it, any NIS pensioner who makes in excess of 750 contributions is entitled to one per cent on every 50 contributions in excess of the 750.
However, several persons have complained that, despite making in excess of 750 contributions, they are being paid the minimum pension at age 60, especially as it relates to those who had migrated prior to age 60.
To illustrate my point, let me give an example: John started to work at age 25, and contributed to NIS until age 50, when he migrated. By that time, he had accumulated 1250 contributions. For the last three years, his contribution was at the maximum ceiling, which under normal circumstances would have qualified him for the maximum pension. However, at age 60, when John applied for his pension, two things happened: (A) He was paid the minimum pension, despite being qualified for the maximum at age 50, and (B) he was paid the minimum pension despite making in excess of 750 contributions.
I am not aware if the policy under both aspects has changed for those who reside overseas, or if persons who complained have not made the necessary contributions, but because of the complaints, can NIS please clarify.

Sincerely,
D Sookdeo