No Assistance from Nedbank

I have recently been retrenched and have been contacting nedbanks credit protection insurance department since early October to lodge a claim

I was provided with an email address *** to which I was forward all necessary documentation this was done about five times each time I receive no response or confirmation of receipt. When I call to enquire I am td my documents were not received, yet all my emails have gone through successfully. I am then provided with the same email address to resend the documents This is extremely frustrating can someone please provide me with alternate details / email addresses since it's claimed that my successful emails have not been received