Professional Couriers - Damaged induction stove top

I packed my induction stove with the official packaging provided by Prestige and sent it from Bangalore to Pune via Professional Couriers on *th July. I received a completely crushed, damaged and unusable stove top on **th July and the customer service is completely unresponsive. They blamed my packaging instead even though I used Prestige packing with thermocol. I added multiple stickers which mentioned 'Handle with care', 'Glass inside', etc. but they are not taking any responsibility. This is a big financial loss for me and I request an immediate refund. The phone number of the company is: ***-********. I have written to them on multiple forums and am receiving no response either. The customer care complaint form on their website does not submit despite me trying several times.