Being charged for 2 routers without purchase

I have recently signed up for a Smarthome essential package and it comes with a free router. It was then exchange for the correct 'advertised' router. <br> The person at the branch had taken the router I had and added it to my account even though I had informed him I am there to exchange it as, the only helpful employee in the branch had managed to obtain the correct router and asked me to go into the branch to pick up the advertised router. <br> Later I had received a bill and it included a cost of 2 routers when I had not purchased a single router. I was not informed that I had to pay for a FREE router. I had informed the branch and the consultant I spoke to assisted my and informed me that it would take 5 working days for the credit to be passed and till this day it has not been passed(13 working days later). <br> I am still liable to pay R1200 extra cause the system shows that I have 2 in my possession. <br> <br> I had also received installation after the advertised \ installed within 7 working days or 1 month free"and I have still not received this credit either in my account. """