Hisense Tumble dryer repair experience

I have had a Hisense tumbler dryer now for just under a year and a half. The machine has stopped working. It is still under warranty to fix. I called the customer care line and asked that they fix it. A technician responded with in 3 days which was great, He advised that they need a part and will order it and this should take a week. It has now been a month, i am constantly calling and they tell me they will escalate the message but nothing happens. i am now calling every day and they just give me the same BS. they do not respond at all and im very disgusted with this service of theirs.