R200 more as what I signed up for!

Mrprice moblie contact me regarding a tablet as she said only R99.00 per month except the first month will be R99.00 exctra due to switching on the line, I did ask more then 4 times if there is any othe costs she clearly said no other only R99m00 pm. I did not use the tablet for 3 weeks as we were moving and it was packet away. I called mr price, emailed 9 emails but no person responded or called to explain, all mrprice do is take the money there is no customer service once they fool you into a sale. That is very very bad and I will def stop all my and my families accounts at mrprice as from today. They toke over R400 and not one call was made!!!that's *****.