Charge R 2900 to Upgrade

I really thought that my issues with Telkom were sorted but to my surprise , shock and horror I received the bill for R4477.34<br> First due to the incompetence's on the Telkom system it took me 6 weeks to finally get my contract upgraded , and then an further 3 days for a sim swap so I could actually use the phone.<br> Now I received a bill which has a migration penalty of R2970.00 what is this for , as far as I am aware there is no such cost if your upgrade . I was never told of this by the store nor by Freedom. <br> I was also told that the pro rata will be about R 270.00 by Unati in the store who actually took a while to get to this calculation and she even said that this is more or less the amount, she wasn't too certain ,<br> This is really unacceptable , being a loyal customer of Telkom for the last 4 years you really don't expect this level of service . with all the competition out there you cannot afford to have service of this standard.<br> <br>