Afrox - Poor service

My husband is on the Oxygen Concentrator due to the pulmonary embolism he had after COVID. He sustained lung fibrosis and are oxygen dependant. Last night during the night, the alarm of his machine went off and he could not use the machine the rest of the night. This morning at 08:00 he reported the machine and previously the machine was replaced the same day. Not today, the reason being that they don't have vehicles and that they will replace the machine tomorrow. My husband cannot sleep without the matching as he gets severe headaches and shortness of breath. Afrox's advise is that if it gets to the point that he can't breath I should take him to the emergency room at our own cost. The cheak.