Cell c must take accountability

Itook out a contract online lastweek tuesday they delivered the Galaxy tab E. On the 9Th of Feb ,same week I noticed there is no speaker on the front of the phone and theres no sound @ all on it even on the speaker on the back of it, I did contact customercare on 8 th and 9th of Feb.was transferred back and forth, Thursday this week I took it to the nearest cell c shop they confirmed its faulty and they said they can't take it I need to call customer Care to come pick it up or replace it, Called Customer Care Again still no help still after I spoke with some ****y consultant, that told me they will call me back they must first listen to the calls to establish if I really reported the phone, I haven't been called back since the18th and what's really ****ing Me off is that they are refusing to take responsibility and delaying further to sort out the matter.Their tterms and conditions state if I'm not satisfied with the phone or if its faulty I have 7 days to report it which I did, they are supposed to replace it, not book it In for repairs, this Is not on