Colive — Unusual Charges

I completed my lock-in period of 3 months which included a month's notice( this is what i have been told) but i have been charged a lockin period.
Against my deposit of Rs 11000, the team sent me a bill for the entire amount, the break down for which had electricity charges, maintenance charges and separation charges, Apart from this they also sent a Lockin period charge of 10, 140.