Old Mutual Gap Cover

I have been with OM gap cover for about 2 years. I recently had surgery and have claims to submit and questions to ask. I began contacting OM on about the 28/2, first with a call be back as per their website, then a call which was not answered, then with numerous emails to numerous addresses as well as one to complaints. It is now a week since this has begun and besides the generic "we have received your mail" I have had no reply. Do the agents all "work "from home and where to from here-is there a place to take this further