poor customer service

my airtime is being converted to internet data. I did not understand what's going on, so I called cellc call centre for assistance. to my surprise they didn't know why my airtime was converted to internet data. I would like to people to know how cellc customer service is poor, I called in 6 times and none of the agents was interested to help me. am done with cellc am changing networks. it's useless and their customer care agents are also useless