Canon — regarding canon printer problem

I had purchased Canon MG2570 series printer a year Back from Home shop 18, now the printer isn't workong properly and not able print clear pages. I have registed compalints so many timea times but no one replied till now from last one month, i m business personnel and my work requires extensive use of printer and from last one month i am facing may problem. Please respond to my complaint and try to fix my printer as soon as possible by sending someone or by any means. I haven't expected such a worst customer handling from auch a big company.