Incorrect contract for the 3rd month in a row AND receiving someone elses account.

In June 2017 I signed a contract with Telkom for 10GB Day time data and 5GB Night time data for R199. Ever since then, I have been paying R249 for 5GB per month. I have been to Telkom Clearwater twice, the man who assisted me has sent emails, made calls, and still this month it has not been rectified. Telkom you will cancel this contract as you are unable to sort it out. What I signed for and what I am paying for is not the same thing. On top of that, I continuously receive accounts attached to my account for a person called “MR AN OTHER” at “32 ABC FLATS” for R1685.55. This is unacceptable.