Havells India — Service Center deny to replaced but it is under the warranty period

Address:

42/6 Naskarpar road, Kolkata 700084

This is to inform you that I partha pratim paria have purchased geyser INSTAN104S10L SP FP WB W/O PRCD SWH and serial no 83LIGDH01311 on 24/11/2022 But suddenly I notic that its lower portion is unclosed then I call Service Center and they send technician After checking he says that there is a internal Screw point brekage in it, He suggests me that it will be replaced as it is under the warranty period, As his spech I inform this to Service Center but they deny to replaced it beccause their saying is that it is my fault and it happens after downfalling on the floor, But the technique checked thoroughly and he said that there is no external brekage It is only internal brekage
So, I request you check my issue as early as possible otherwise I will complaine to consumer forum