Voltas — Voltas split ac

I have purchased a Voltas split AC for my workplace. I have everything fitted already like the wire stabilizer and every single thing that needs to be there for an AC installation. But the service guy came to install the ac said that I have to purchase the new wiring ang stabilizer as well from them. Wire cost he told me 320/ feet or meter i don't remember but he told me wiring would cost around 4000 and in total he said the fitting would cost me around 7500. I did not have an option to install the ax from a local electrician because till the time Voltas engineer does not scan the code on the product. It won't be working. This is how I have been told by that service guy from Voltas. DO NOT BUY VOLTAS ACs. I have returned that AC to that store and bought a new AC from Hitachi. Working good on my existing setup. THEY ARE NOT TATA PRODUCT. #CHOR