*****ulent activities on my account or someone not doing their job

\I have been with vodacom since 1997. The last year my account amount has been erratic The amount is basicly never the same. One month it seems normal Between R3k and R4k, after I made payment im informed that I have short paid and the account shoots up to R8k. According to vodacom every month I shortpay and I specificly pay the amount on the invoice. No where on the invoices I can see that Im paying for something extra. I have asked on numerous accounts via email for a recon as I have been paying every month as I should. Either *****ulant activities is going on on my account but someone has to sort it out. I have decided to go to MTN willing to pay the premature cancellation fee as at this stage my account is costing my way more than that and if I dont pay the outstanding amount they switch my services off. Somewhere there is a huge snake in the grass and Im fed up. Sort this out now once and for all. I will be away at sea from Monday but available only on whats app for a call. Alternatively you can speak to my wife on ***. I want a FULL RECON for the last year and a half and if this is not sorted out I will get legal advice.