Complaint Lewis Stores

I am very annoyed with this store in the way they have been treating my dad who is their customer. My dad keeps complaining and I have been saying I will come on here to write a review then yesterday they tipped me off the edge hence I am writing this review. My dad bought a bedroom suite from the Eastern Cape Branch in 2018 and they delivered to his place a broken mirror and they have been promising to replace it and haven't till this very day but have been giving my dad the run around instead and making empty promises but have been debiting his bank account without fail. That mirror needs to be replaced, it's been a very long time of grace now. Yesterday my dad shows me that they debited him for his full installment which is R2200, whereas they told him he only owed the last R300 and advised him in EC not to pay it as they won't replace the mirror if he finishes the debt. I said to my dad how can they give you such advise because that will affect his credit record negatively. I told my dad because they deducted the full installment and he only left enough money on what they advised him, will result now in bank changes which the store has to pay as they advised him wrong. My experience with them is when they sent dad an sms that he could go to any Lewis store to claim his R600 gift and when he went to the branch in Wynberg they turned him away and said he can only get it in the store in EC. When dad came to the car and told me I went with him back to the store to tell them what the sms read "any Lewis store" then they gave the free gift which was not even to the value of the amount but I was already annoyed and did not want to argue about that as well. But dad was not happy and returned the gift to them and said it wasn't that value then they contacted me to explain that it is that value which it didn't seem like that value and that we should appreciate even if it was a cup. My question is, is this how they treat all their customers or only specific customers which they see they can take for a ride. I'm very disappointed in how my dad has been treated by this store when he is a loyal customer