Vijay Sales — technician delay

I bought washing machine from ggn sector 29 store order no.341-q-sot 3607.
I have told the guy who sold me the product that we need installation visit tomorrow only, they said no problem!!, i told them we are not available over the weekdays so any how we need it tomorrow if you can't don't sell this but he sold saying it will be done tomorrow anyhow.
But you guys are good for nothing still sending installation guy on weekedays only.
If that was the case you should have told me when i bought this machine, u guys just need to sell ur products, u guys are good for nothing.