UTTERLY DISAPPOINTED/VERY POOR SERVICE

I handed in my home theatre system for repairs at the end of December 2014.I handed in the warranty form when it was last repaired the year prior on extended warranty by them. I was advised they would come back to me which they only did after I went to the store personally to follow up.no one could help me then.i was then called about a week later where I was asked to bring in my invoice for the purchase cos they could not trace the warranty for my system.i did so and I got a call 5 days later where I was told I have to pay cash knowing that I had an extended warranty.i submitted myself nonetheless & requested that they advise me of the quote for repairs cos I really wanted my system.Despite several sms they have sent say they will sort something out for me I have not received the quote nor an amicable solution to a situation I feel solely stands with them. It is almost 4 months since I have taken in my system and I still have no satisfactory answers neither do I have my system.I have always held HiFi Corp in high regard and have used them for so many purchases in the past. Now I am utterly disappointed & disgusted in this very poor service. I am inclined to take this even further.