Items on invoice that never occured

Last month I logged a complaint about roaming calls on my outstanding balance. While on roaming not even one call has been made because I know how expensive they can be. Roaming has only been enabled for emergencies.<br> <br> Invoice Statement:<br> <br> Roamed calls 768 Minutes R3,821.15 R534.96 R4,356.11<br> <br> All these calls are made to MyMTM...<br> <br> <br> 2015-09-06 09:37 Roamed calls 0:00:01 mymtn MTN R134.92 R134.92 <br> 2015-09-06 10:30 Roamed calls 0:00:01 mymtn MTN R29.99 R29.99<br> 2015-09-05 03:13 Roamed calls 0:00:01 mymtn MTN R307.32 R307.32<br> 2015-09-05 04:07 Roamed calls 0:00:01 mymtn MTN R22.49 R22.49<br> 2015-09-05 04:23 Roamed calls 0:00:01 mymtn MTN R15.00 R15.00<br> 2015-09-05 04:50 Roamed calls 0:00:01 mymtn MTN R209.88 R209.88<br> <br> Why would I call MyMTN between 3AM and 4AM in the morning???? Why is the volume 1 second but there's almost a R200 difference between calls?<br> <br> You cannot charge me for calls not even made.