Thanks for your question - I am Sam and I am one of the UK tax experts here on JUst Answer.
Your pension should have small amount of tax taken from it as it is in excess of your personal allowances £12456 - £11000 = £1456 x 20% = £291.20
So you should have a gross pension of £1038 less tax £24.27 =1013.73 so on that basis I agree you are paying too much tax - however do you also have a state pension? As it would appear that you are NOT being awarded the allowances in their entirety against your pension, or do you have another source of income such as rental income or investment income or another pension? Or owe tax from a previous tax year?
If not then you will need to telephone HMRC (and I recommend as soon after 8am or as close to 8pm so that you get through straight away) and ask them to reissue the correct tax cod against your pension, Then any tax overpaid will be repaid back along with your next pension payment.
Do let me know if I can assist further