Claim submitted 6 weeks ago - No response

I submitted an Admed claim 6 weeks ago. I have now submitted the same claim 5 times and all I receive is an email advising that I will be contacted in 2 workings days. To date I have received no call. I personally phoned the call centre (the number was unavailable). I then phoned head office and was transferred to claims dept where I was advised that my claim was being authorised and would be paid by 5 May. Well today is 6 May and still nothing. Very bad service Guardrisk