Overcharged

I have been trying to lodge a complaint but the is no send button. Please can you assist me on this matter, I have open a new contract with Vodacom and since then I regard doing so . Reason being 1. I open this contract for a gift to my child for Christmas and was promised that it will work before that but it didn't I called in several times without assistance up until the lady by the name of Thato assisted but the sm card didn't have a network so it didn't work. I requested that they must transfer the benefits on my prepaid number as their sm card was not working , still it took me three-four calls for that to be done . then when the deduct the money for January they deducted R992.00 INSTEAD OF R296.00 that I was invoiced I called them again on the 02.02.2016 ever since then I haven't received a call from them. Please assist<br>