Worse service at Telkom

I have a contract with Telkom, my account was in arrears for 2 months I then made a payment in January for the 2 months leaving me with January bill to pay when I start for the bill the statement reflected R5600. I then contact telkom in which then they told me to send proof of payment I did ND I have not received communication from them every time I send a email Rulani Ndlovu will say it's still been investigated this is been 2 weeks it still been investigated. I called the call center giving the case number every agent has they different answer from the case number closed to asking Rulani to call me as they cannot locate any. My account is suspended with no explanation beside the account is been investigated.