Naaptol Online Shopping — silai machine is not working

Dear manager,
I have purchased a silai machine invoice no 849l[protected], dated 29.01.2018.
Due to some reason, it was not used after delivery. Today when i tried to use it, after following all the instructions, it did not work. I tried with the help of batteries and power both but the main knob did not move. So, if someone is sent for checking it would be appreciated. Please, do the needful at the earliest. Whoever is coming to check can come between 4pm to 6 pm.
Waiting for your reply.
Thank you!