Ridiculous billing

I received a reminder notification payment for the month of July yesterday morning only to find out that I was over billed from R876 to R3483, 60. I then checked my emails to view the invoice that was send to me beginning of the month only to find that the are some subscriptions that I know nothing about. i then immediately called Telkom only to wait over 30 minutes on the call and then to be send from one department after having my call hanged up. I later got successful to talk to Roviwa at 11:24, I explained to him that I have a contract if two wifi router and I unfortunately lost one of the routers and after not being able to block it I let it go since I knew that it is expiring soon but and I see that I was over charged for the month of July on one number that might be the router that have been lost for event billing subscription with a discription of Akinga vertical servi and since I have singed up for the package that only allow me to use the data I get assigned to monthly and for it to go off when it is depleted I don't understand. Roviwa explained that the person who have taken my router have increased data usage manually hence I got this high billing and have subscribed to Akinga vertical for 3 rands per day(of which on the billing it is charged R3 x5 per day) when I checked this Akinga company I see it is partnered with Telkom as Akinga vertical service. I was told that I have to pay the amount I was billed. I somehow believed this story because it is on the number that is lost but I later realized that there is no way the data usage was increased as I signed up for fixed data usage subscription, so how come it was increased without my knowledge and my concern. A request to cancel the subscription was made and granted. He then advised on blocking the Sim card as well. i have not signed up for extra data usage and would also like for the bill to be rectified, as for Akinga vertical if it is said to be 3rand per day why am I being billed 15 rand per day? I am frustrated since I have two more years to go with the current cell phone contract I have as it seems that my personal information is not safe with telkom and can be easily accessed. I eagerly can't wait for the contract to expire and cut ties with telkom. Am really concerned that all this is happening one month before my contract is expiring for this router. It seems as if they wanna milk me dry.