Unsatisfied and disgraced customer

I am disgusted by these people.. Tebogo from Research marketing in the clothing industry took 40minutes of my time to ask me research questions about ladies 38 + .. Promised to send me R50 airtime never sent it.. their no. Is ***.. Do not take their call.. In true caller it comes up as Research and the gut who called me is Tebogo.. Why do they lie about the airtime.. I am disgusted by them!!!!!!!!!!