Shocking service

On 7th May I sent in 7 documents required to apply for my pension on the death of my husband. No response other than auto reply. i ring up get cut off then when I get through someone will phone back, NOT, So I keep on and lo and behold they pay my husband's pension on the 25th as they were unaware that he had passed away. Their problem as bank account frozen. In the meantime I try and find out about mine. Well it was promised yesterday. No pension. Cannot get hold of anybody, cut off again. Finally I am told that they have a problem with their system . That is not my problem. Really shocking service especially when I AM GRIEVING PLUS TRYING TO ORGANISE MY LIFE. Not fair.