Not Charging Port

I've had a contract phone with Nashua Mobile since 2011, I would upgrade as and when. In 2013 February I took Blackberry 9720 under contract and my contract was R133 including BIS. In 2014 Nashua customers were moved to Altech Autopage and thats when i started experiencing issues.<br> 1. My monthly bill was changed to R148 which i did pay and i was previously on debit order I now have to pay eft.<br> 2.The phone that was reflected on statement was Lumia something which i never owned.<br> 3. The port of the phone doesnt charge i've taken back the phone more than 4/5 times, even now i've had to buy a new phone but i have a phone im paying for. Everytime i took back the phone it had one problem after a month or so doesn't charge. I'll take it back to them they'll have the phone for 2-3 weeks when it gets back its a refurbished phoned not a new one regardless of my complains.<br> 4. I've since bought an external battery charger but its a really inconvenience as i pay for BIS but i cannot use it as it dies anytime and have to remove battery.<br> <br> I feel i pay a lot of money and spend lot of time up and down for sending fone for repairs only to get a refurbished phone.