Oxygen concentrator DDT-1A
I purchased an oxygen concentrator DDT-1A. Within the first 3 hours it stopped working properly. As per warranty request I forwarded a video within 4 hours of opening the box the new machine was in. There was a response but it was For me to take the brand new machine (with a warning label on it to not disassemble except by a professional mechanic) apart. They offered to send me the part. I explained I needed a new machine ASAP as my daughter uses the concentrator daily. After 7 corresponding emails it ended with the same request offer to send me a part so i can fix the machine myself. This is unacceptable and now I have to "fight" to get a full refund as i requested a refund prior but was only offered a part. I am very dissatisfied.