VERY irritated customer

I have never been so irritated with a company before in my entire life! I ordered curtains from this company, and am unable to use them as they are too short. I have been sending emails, facebook messages, AND talking to the WRONG people on the phone for months now trying to sort out this issue. Its as if they are SO scared to loose money, they don't want to help me rectify the situation. I have said on numerous recorded phone calls that I am not going to pay for something that I cant use, and that I wont let them loose the money, but if we can just exchange the curtains for longer one's, as I only opened ONE of the 8 packets I ordered. But the only person I have been able to speak to is the collections department who phones me every week. Its truly ridiculous, they will spend the time and money to phone u 101 times when they want money, surely one of those calls could have been for trying to sort out the issue at hand? And like clock work every month, I get the same sms saying they have been unable to get hold of me....really?? Is there no communication between the departments? As the collection department seems to get hold of me pretty fine. I have said on numerous accounts.....I will pay....FOR SOMETHING THAT I CAN USE. Im truly disappointed in this.