No product knowlage

how is this service even allowed in any business.<br> <br> 2 weeks back app**** for a new line. I then heard that all is in order and only have to pay R700 for installation and deposit. day after that i phoned again to ask where should I should pay the money, they then told me at post office. then the lady asked me polite on why do i want to pay the dept? my response was that the lady who did the application told me to pay R700 dept for installation. she rep**** and said i don't have to pay any thing after she asked for my ID number. unfortunately the call dropped and phoned back, once again talked to a different agent. this time a male agent answered and asked him the same thing. then he told me i only have to pay R700. that's for installation and everything. no probs. now i was on my way to go and pay and called bofore i left, then the lady told me that i have to pay R700 only and then have to pay R619.00 end of the month for installation only...line dropped again. tried to phone back and after 67mins of holding no answer, no answer at Potchefstroom branch. All i want to know is how much do i have to pay for installation and dept. 4 different amounts for the same thin?????