Finally got award review paperwork, not happy with length of award, what next?

buddy85

Finally got my award review letter
Brief history I've been on high mobility for 11 years , last 2 awards were for 3 years and 4 years respectively 
I've now been awarded high mobility and standard living ( which im happy with) but award length of 2 years 6 months ( which I'm not happy with)
The pa4 assessor actually recommended 1 year 6 months but the DWP have overturned decision  and has overruled the assessor and gave me 2 years 6 months.
I want to dispute the length only, without  them looking at the rest  of the award but I'm worried about them opening up and looking at the whole award again so would appreciate some advice  on how to word it.
Finally I have only 6 days to put a mandatory reconsideration in before the 30 days are up so am I ok just to phone up.The delay in the letter arriving is actually down to staff shortages at post offic and not the DWP 

Thanks everyone for your help as always 

poppy123456

buddy85 said:

Finally I have only 6 days to put a mandatory reconsideration in before the 30 days are up so am I ok just to phone up.The delay in the letter arriving is actually down to staff shortages at post offic and not the DWP 

You have 13 months to request the MR.