Misinformed...expensive

After 2 days of deliberating and clearly asking the consultant at telkom about my need for wifi and and my lack of knowledge, i bought a mifi and was given 12g and 7 gig....didnt even last 24 hours ...i tried to recharge but the data is expensive...i specifically said i want i device i can plug in and pay monthly, not somethingvthat runs out after 1 night.... this is gonna be costly for me...

I want to return the router and look at other options that fut into my finances.. im happyntoblay forbthe free data i got.... i bought this device yesterday 17h30 connected it 18h00 ...this morning at 11am data was finished . Only comnected tv and boys were on the phone watching you tube....i want something uncapped.

Can i return it for a refund as it was nit explained clearly, also can i go to a different telkom store