No tech companies for recruitment

I am in 7th sem B.tech Cse . In my college, the companies are coming but for sale profiles only. I don't want to go into sales but still I'm sitting for the drives. No tech companies are coming for hiring. The placement team is saying that few tech companies will come next month or the month after that but I'm not sure of that. What should i do ? Should i go sales role ? I really don't want to waste my degree and go into sales. So any suggestions?