hey i hope am not too late to answer your question....
anyway there may be G.D round (group Disc) ,psycomatric 
test & personal interview ....
all th best

There are five round in 247customer 
1. Personal
2. Topic 
3. GD
4. 2 HR round

if u hav applied for 24/7 online then first they will take 
a telephonic interview,on that basis if u r shortlisted 
then they will call u 4 nxt round......................n in 
my 3 attempts i hav never gone beyond that.............bst 
of luk

Hope im not late to answer anyway this wud b helpful 2 
someone else. It better we take up the intvws during job 
melas. Coz i did th e same and got selected for 247 hyd 
where i had 2 rounds of intv only. Then we were taken to le 
royal meridien resorts for a 2 week training session and 
that ws ausumn. We had typing classes, english grammar, 
accent and soft skill classes. We guys had a very gud time 
and fun out der. If we clear the trainign, we had techincla 
training abt the product for one week, then 2 more weeks of 
calling traing. It itakes arnd 1 mth for u to become an 
employee....all the best.