Data and airtime gone

So I phoned Mtn to report my data and airtime I loaded disappeared. <br> <br> I topped up a R300 airtime online and bought a 300mb data bundle for R85. I got 165mb of free data to use as a promotion. I only used Whutsapp on my phone and did not watch videos or browsed the net. <br> <br> When I tried to call later I got a Mtn message saying I have insufficient airtime to make this call... I did phone a little before then but not nearly enough to deplete my airtime. But more importantly where did my data go? So I phoned and reported this and they told me my data also depleated my airtime. My call ref nr is ***. It was supposed to he resolved in 5 workdays, the next time I followed up it was 7 and today I phoned and was told I could only get a report tomorrow which will make it 9 days... <br> <br> This is redicilous and if I could I would really just cancel my contract and go elsewhere. I will most certainly never do business with MTN again. The worse company and I should have learned form dealing with them previously.