Long carers allowance delays

Hi my name is Steve. I am a carer for my wife. I am trying, without success, to reactivate my carers allowance payments after the account was suspended while my wife was in hospital. So far I have contacted them 7 times over a period of 13 weeks. They have escalated my request and finally I lodged a complaint as I have had no communication from them during this process other than when I have contacted them myself. They give no explanation as to why the payments have not started again. Has anyone had a similar experience or can offer any advice on what to do next. Many thanks.