The owner is asking for chiller charges for last 2 years. Should I pay?

The owner is asking for chiller charges for the last 2 years, for an apartment that we have vacated 2 months ago.

The bills are in the owner's name, who has been settling them and is now requesting reimbursement contract mentioned a company for the chiller by the name '[----], which does not exist.

We did ask the building and agent for a chiller and were told that those are covered within the building. In the 2nd year, the term chiller was removed by the owner from the contract.

The invoices shared to claim the chiller charges are from a building management company that is issuing building management charges to the owner based on the area of the apartment and it has nothing to do with the consumption.

At end of the lease, the owner asked for settled copies of all other utility bills which were shared and there was no mention of chiller charges even then.

Accordingly, the owner paid back the security deposit. The owner has sent a legal notice to reimburse these paid invoices, along with the charges he incurred on the legal notice and lawyer.