Swipe Telecom — LCD problem

Purchased a Swipe mobile konnect 3 and LCD Damage, go to Borivali service centre Infinity care Thakkar Moll Borivali west, Mumbai. submitted mobile (konnect 3) on dated 03.07.15. They ask for charges 880.00 and ready to give. On the time of submission they have told me that within a week it will be completed but not able to give today 15.07.15. My work is suffering and no proper reply getting. Requested to look into the matter to resolve the same other wise I will go for legal formalities. Hemant singh Mumbai. Mob: [protected]