Vasanth & Co — Lloyd Split AC Purchase related issue

Address: Porur vasanth & co

I was book LLOYD Split AC on Vasanth & Co in porur Branch.
First of all he is not in showroom he will convey the details in phone call only.
he told free installation, but extra copper wire will be extra charge, that charge is 850 to 900. But the technician is told me 1100 and then I have called vasanth & co executive. I ask him to you told extra copper wire per meter 850 to 900 only but technician is charging me 1100 per meter, so vasanth & co employee speak technician will charged me 1000 per meter.
when i purchase AC executive told free installation but the technician will be charged me total 7000.

I think that technician and the employee will have any connection?

i think both have some connection to share that money.