Hush Puppies — poor quality footwear - worn out in a single time use

I am complaining about a pair of footwear that i recently purchased (15/04/2019) from hush puppies store cannaught place, new delhi. The quality of the product that i purchased is this much worse that its heel got damaged in just a single time use. I visited the store regarding the same but the store manager named praveen kumar is not at all willing to listen to the complaint and said that i have damaged the product as its heel got rubbed ("ghis gya") when i wore it... I don't understand how can a footwear for 5000 rupees from such a reputed brand like hush puppies can get damage in a single time use... Is the product quality this much worse??... He himself provided me the email id to complain as he already knew that nobody is going to listen to the customer... As he didn't do anything i logged a complaint on the customer care but didn't receive any satisfactory response... They said the product got damaged due to regular wear and tear... Its been less than 15 days since i bought it and i wore it for just a single time then how can it be regular wear and tear... When i asked them the basis on which they resolved my complaint as i didn't provide any pictures of the damaged product or the product itself except for the store manager who has seen it... They said the product is inspected by the concerned authorities then if the concerned authority is only the store manager then what is the purpose of having customer care if the services are not meant for customers but directed only towards the store manager.
I am a regular customer of hush puppies but i have never experienced this kind of problem and this kind of behavior towards customer.
Here, m providing the pictures of the damaged product.
I need my product to be replaced as the product quality is not at all acceptable for a product costing 5000 rupees from a reputed brand like hush puppies.