Waiting 2 months for a charger to be replaced!

I upgraded my cell phone contract at Altech Autopage Montana on 9.12.2015. The charger I received with my Samsung S6 did not want to charge my phone. I booked it in for repairs at Autopage Montana on 18.12.2015. I received a sms 14.1.2016 indicating that the charger has been replaced and a new charger will be send to Autopage Montana. I received a call from the branch that I can collect the charger on 18.1.2016. I went to collect the charger and when I came home realised that it was an incorrect charger and that I can't charge my phone. I took it back to the branch 19.1.2016 indicating that the incorrect charger was either send by h/off or given to me by the branch, and that they need to please give me the correct charger. I have received another sms 22.1.2016 indicating that the charger has again been booked for repairs. The charger is not broken - I just need a charger that I can charge my Samsung S6 on. I have phoned the branch at Autopage Montana on numerous occasions and are being told that they did send an email and have no feedback. The charger just needs to be replaced - why is this taking almost 2 months?