Damaged goods - reported almost three months ago

I bought a three piece bedroom suite plus the bed for my mom, the items were delivered at her house only to find that the people that came didn't have a drill to assemble the goods. They came the following day and left without asking anyone to inspect the items, only to find that the items were scratched and not properly assembled. I inspected the goods and found that they had manufacturer faults and immediately reported this to the store. I was told almost a week after that the complaint was logged and received a call from the head office. There were so many delays till I received a call from one of the consultants who said that they items need to be replaced and said he'd call me back but never did. The sales consultant said that the warehouse is still waiting for stock but also doesn't help in following up. It's now three months and my parents cannot even use the items as they are awaiting the store to collect the items but still nothing. I don't have the time to keep following up on this and they have all my contact details and I can never get through when trying to call them.