Wakefit — Product not getting delivered, 40 days overdue & full payment has been done

I have ordered a 3+2 sofa from Wakefit, which was promised to be delivered to me on 5th June. It has been 10 days overdue and I have not got any updates/ information on the same.
I tried calling the customer care multiple times but they are not helping. Everytime they provide the same response that it will be delivered with 48 hours. We have paid the amount in full, Kindly help