Poor after sales support

I have received very poor client service from Incredible Connection. I ordered a cellphone online Sunday evening and tried to cancel the order ever since Monday morning. I have contacted the Incredible Connection through their customers service number three times, sent three e-mails to ***, three e-mails to *** and used their web interface three times to cancel the order. Meanwhile I saw how the order was picked and dispatched and couriered through their web tracking interface. I refused to accept the parcel yesterday when the courier arrived, only to see it is being sent to be delivered again today. How is it possible to contact a company through 4 channels, three times through every channel only to be ignored?