Limeroad — Misuse of my name and spamming my friends by sending mails from my name

Website: www.limeroad.com

After subscribing to Limeroad, it has started sending so many mail to my friends and colleagues through email which is having my name. Normally mails from such e-commerce does not comes from such an email id which is having any name. Its happening even after unsubscribing Limeroad.
I am also attaching 2 images for your reference.

I would like Limeroad to stop this spamming activity immediate

Thanks,
Shruti Mehta