Kd Technology — I am complaining about fraud company kd technology

Address: 441001

Sir/mam,
Maine kd technology ki add online dekhi thi & maine apply kiya. Then i got a call from that company and registration process complete hua then after that registration process muje mera wrk provide kiya gaya aur ek sign b karwai gai alg se jo ki contract paper me dala gya jiske bare me mje information nahi thi. Us contract k hisab se muje 20 din me 2200 forms complete karne the jisme se maine 10 dino me 1300 forms complete kiye after that i called them but they didnt received my call from my number but maine jaise hi dusre number se call kiyaa unhone turant receive kr liya but jab maine apna name btaya to unhone call kat diya nd blok b kiya jiske vajah se maine apna work krna stop krdi becz i got confused ki muje response q ni diya jara.
But now they r saying ki muje unhe fee deni hogi quki maine unka wrk complete nahi krke diya.
They r sending me notices from lawyer named "minhaz m. Patel" address "501 v k. Plaza 1/238-239 opposite jamrukh gali near police gate nanpura main road nanpura surat-395001"
And also unke fee ki amount b roj roj badhti jaa rahi hai.:like 5200, then 7600, then 8500, then saying to pay 50, 000/- if i did not replied to them.
Please give me advice what should i do & please help.