Over billed by telkom

<p>Good day,</p> <p> </p> <p>I have a cellphone contract with telkom which is a smart plan 50(500 Mb + 50mins) and i am paying R230.00 monthly. i asked telkom for an additional 500 Mb on a monthly basis and they told me me they'll add R69.00 on my premium and we agreed(R230.00 + R69.00 = R299 on my calculator i dont know on telkom's calculator). I was shocked when they debit a R499.00 on my account last month and i immediately called them for an explanation and they told me they charged me for things they were not suppose to and i was given a case number ***6 and a promise that i will be refunded my ****** money and will receive a call from telkom to keep me updated. To date i haven't heard anything from them instead i received an sms that my case has been resolved but said nothing about the refund, i called them again and this time they reopened a case number again for me and the same false promises were given to me again. we are now at the end of May and i havent received my money back instead i got another invoice that they will debit another R499 from my account! Kindly assist before these vultures take out my 2nd eye and leave me blind with their ***** business please</p>