Bad Customer Service Ever......

bought 5 seater couches they were delivered while i was not home , when i got home found out that the were 2 couches with missing legs , reported the problem at the Brits branch lewis store, second day after delivery.Its been 4 weeks since they have informed me that they will exchange them, till today i am still waiting for them to exchange them , i have small kids at home what if they damages them?.this is the worst Customer experience .i am always the one calling them they don't even bother to give me a call to inform me of what is causing the delay.They just dont care about their customers.