I have been charged almost double for a Telkom Contract

<p>Good day<br />i took on a Telkom contract on the 27 or 28 of April which cost R849 per month on a 2GB freeme contract.</p> <p>i was told in store that i would be charged a pro rata rate for the remaining days of the month for the service that i would be recieveing from telkom, at the of May i was billed R1515.38 meaning that i was charged R666.38 for 3 days in April, this is unacceptable and i will not stand for such.</p> <p> I want my money back this doesn't make sense.</p>