COPD patient left with no service

Discovery Health,after Iwas diagnosed with COPD, in their infinite kindness provided me for my oxigen supply with a cargo suitcase size of oxygen concentrator. rendering me practically home bound. Legal services do this for delinquents in home arrest. Thursday this machine stopped working and in the early morning hour I reported the case to vital air requesting urgent service. I was promised service ASAP and today , Sunday afternoon I still struggle with lack of air. This kind of dis-consideration of a person in need is typical to this company treating the customers as dirt