national insurance payments for state pension?

Sorry as long as you work & earn above the earnings lower threshold you must continue to pay NI. This is not only for your State Pension but for a range of other benefits. Like Tax that's the system. You only stop paying NI once you reach State Retirement Age when you will receive an exemption card which you give your Employer if you continue working.

For 39 years contributions, you only qualify for the basic State pension which is about £95 per week. If you stop paying your contributions now, that will exclude you from other benefits such as Pension credit etc. Pension Credit can make up your pension to about £140/ 150 per week. plus any further increases anually.

It doesn't work like that - you still have to pay into the system. You could ring up the tax office but I highly doubt you'd get anything.

It will also be going down to 30 years for qualifying now.

If you are a Lady of 60 or a man of 65 and are still working your NI contributions cease. If you are not of these ages and still working you have to keep on paying. No way round it.

that is just to receive the basic pension if you stop paying now you wont get any benefits apart from the basic pension in the future no Xmas bonus and no annual increase