https://www.connectpackers.com/ - committed the cashback but dint provide

I was looking for movers and packers in Bangalore for house shifting in May end ****. After i google...
i found https://www.connectpackers.com/.
They committed if i opt for one of the movers & packers recommended by them....i will be given ***/- paytm cashback. I opted Bharathi movers and packers recommended by them...who provided one of the worst packing & shifting service. and later when i called the connect packers for cashback... They said today/tomorrow. Next day. Monday Tuesday and the day never came. I called them many times but they never responded. Later they stopped picking my calls. Recently when i called...they started using abusive language. There executive name is Prashant and number is **********. Its not about ***/- ...its all about cheating ...and making people fool. I just want an action against them.