PRO- LONGING WARRANTY

I RECENTLY PURCHASED AN AMPLIFIER FROM THEM, AND LATER COME UPON A PROBLEM WHEREBY IT BLEW A CHANNEL. I TOOK IT BACK FOR REPAIRS SINCE IT WAS UNDER WARRANTY IN 11/05/2015, EVERY TIME I CALL IN TO FIND OUT HOW FAR THEY ARE WITH THE REPAIRS I GET EXCUSES. ITS AUGUST NOW AND THEY STILL TELL ME STORIES. WILL I EVER GET MY AMPLIFIER BACK?