Regus review: Virtual office

I signed up for a virtual office online with Regus 15 Moore Street Canberra in September, It took a week after I made a number of phone calls to get the welcome email with mailing address but it didn't have the telephone number for my virtual office. After calling the Moore street office I was told that it doesn't include a phone number but clearly it did. After many more calls they finally agreed it did. Now the end of the second week still no phone number and finding the service appalling I asked the manager S. that I wish to cancel the agreement and be provide a refund due to poor service and not been provided what I was charged for. For the last month I have asked for an update on having the refund provided and notified that I'm still getting sent invoices to which S. the manager said don't pay the invoices please be patient as we resolved this for you. The same response to my weekly emails for the past 4 weeks. Now today I have received a legal notice from Regis threating me with court action and a mark in my credit rating and demanding I pay over $2,000. This is appalling, I can't get any resolution and now I'm threatened?