Me and you mobile ********

This me and you mobile is another **** opperation. I have bought a 40gig data sim at R200 4weeks ago on facebook add.i have been back and forth over almost 20 emails on this faulty sim I got from them .I have placed it in my router and phone and tab and nothing its empty .I have email the company so many times and nothing .They asked for my personal details but still no refund .I am at my with end I bought this sim card for my daughter to do school work but they are not refunding or helping with this problem .worst ******** ever i regret buying from them .