Kelvinator Tumble Dryer faulty from day 1!!!!!

We purchased a Kelvinator tumble dryer from hi-fi corp luckily I bought extended warranty as the dryer have not been working from day 1. Within the first couple of months the unit was in for repairs several times. The last 3 months I reported the faulty unit 4 times and the technician was at my house a couple of times without fixing the problem. Today the technician finally replaced a faulty belt an I was hopeful but the first time I used the tumble dryer it did not even run a full cycle before showing an E2 message. I am fed up! I now have to report the fault AGAIN and wait another 3months! What can I do? I am desperate to have this issue sorted. I will never again buy anything from any hi-fi corp again as the after sales support is terrible!!! And I will never buy any Kelvinator products from any supplier again!!!!!!