Trademark Terrible service by telkom

Case: 2 ********** Telkom never ceases to amaze me any more, month after month one has to wait with baited breath to see if the correct amount was debited correctly, unfortunately this month Their Trademark double debit struck (25th June 2018)

i called them at 20:33 (25th June 2018) to ask why was i double debited for my Home wifi 30 for 30 bundle after much discussion i was advised that i was charged an out of bundle fee of R500.00, i immediatly advised them that this was incorrect because i didnt call to request to use out of bundle data, then i was advised that it is automatic, meaning as soon as your data finishes youre now charged for an out of bundle data plan capped at R500.00 with that said i advised the consultant (Mbali Zondo) that i have been through this with Telkom before and they need to refund my R500 like they did in the past when given all the facts...Mbali then advised me that no refund will be made as i used the data and i know what i signed up for. the facts given to Mbali were that i deplete my data month after month and when my data is used up i simply wait for the 1st of the month for my new bundle and the correct amount is deducted (well done telkom) ...why did the out of bundle data not "automatically kick in" for the last 9 months and only on this month? i didn't request for it, and will not pay for it and it should be refunded immediately, failure to do so then lets just start the contract cancellation proceedings. simple.