Cant Change my Surname in 3 Month

Morning<br> <br> I have been trying to change my surname with Vodacom now for the last 3 months. After emailing all the information I went to the Customer Services walk in stores and gave them all the information and still nothing. So last week I started emailing them, coz I need proof of address with new surname to change banking details. so last week I start again to change my address, because the guys at Umhlanga Repairs shop never submitted my documents. So I send them all the documents on the 22nd of June and today I email to find out can they send me an invoice with the new surname. The ask me as true as Hell please send us a copy of your ID and marriage certificate after sending it to them about 4 times and taking it in. <br> <br> WHAT DO I HAVE TO DO TO HAVE MY NAME CHANGED BY PATHETIC VODACOM!!!