Bad service.

I've been struggling for 2 and a half days trying to get this company to replace a faulty machine. Machine switched off every 6 minutes. 7 phone calls later still nothing, no response from them. Every time I phoned they just said they escalatied the query. I had a patient that is permanently on the oxygen machine. It's was a matter of life and death actually. Had to get an ambulance at the end of the day.