Webtend Technology Services — This company against me 3500 utility charges for not completing work for 12 day's but 1200 form I'm completing for 12days

This company term is 12days time for 1200 form supposed this 1200 form not complete you have pay 3500 rs admin charges but I'm completing 12days and complete 1200 form but this Company give amount 3500 and fir, legal notices to my address this message is real plz help me date is 27.04.2022 and my name hariharan