Telkom
Aising interest cannot explain

I refer to my account 242072560001 dated 10.03.13, yesterday i spoke to Thozame and Zoliswea
on 10217 these representatives of Telkom could not explain the interest, i also sent an automatic complain
on telkoms website no response. can someone please explain what this interest refers to as i want to pay this account, what direction should i follow