Disgusting customer service from Fedhealth

I have been a member of Fedhealth for many years. I have always been satisfied with the customer service. However for the last couple of days I have never been so disappointed and fed up with this business.

In September 2018 Fedhealth terminated my membership for no reason. I sent through bank statements displaying each month's contribution as being successful. I am unable to get hold of the credit controller appointed to my account. She is not getting back to me nor is she answering my calls or voice messages. It is useless to contact the call centre as they are just telling me they will send the request through to the credit department. Is there no one that can sort out my problem. I have phoned numerous times, duration of calls ranging anything from 40 minutes to an hour. Fedhealth received all their contributions, but I am left with no medical cover and no one to help me with this.