Unexplained sudden data loss

I have reported a matter to Telkom (Ref ***5) and to date nobody has responded. I have had 3 x 10+10gig data bundles for the last 16 months with no problems and I have usually got excess data at the end of the month on all three...that is until July. In July all three had no more bundle 3 weeks into the month and the one at my home office I had to purchase an extra 10gig after 10 days and this was still out of bundle before the end of the month.<br> <br> I have re-done all my passwords to 12 digit alph/numeric passwords but I still lose data on all three of my wifi units and yesterday all three had out of data bundle messages. I have been monitoring these daily but the data just seems to dissappear. Out of desperation I purchased another 50gig contract 2 weeks ago and have been monitoring this and usage and find that I use between 200-360mb daily. The first week in August on the same site but on the 10+10gig bundle we used 8gig in the first week.<br> <br> None of this makes sense.