Hisense Warranty, not worth it.

Hisense Warranty. We have bought 3 Hisense appliances. We were offered to extend the warranty to four years paying an additional amount for this service. We have never needed to use this warranty until now. Mid June we reported a problem to the call centre. A technician came out and said he did not have the right tools for the job and would return on Monday. He was there on the Friday. After numerous messages and phone calls he never pitched as promised. Despite complaining to Hisense call centre, .nothing has come of it. They are simply not interested. It is not worth taking out the additional warranty. Not worth the extra expense.