Tossed between departments TELKOM

Today I've phoned you guys 66 times. The moments that I spent with you on the phone I was tossed around between sales, customer service, accounts and technical. I couldn't speak to a manager and my problem is still not solved. I'm trying to help an old deaf man UPGRADING he's home internet which means you'll make MORE MONEY. I've got all the necessary details yet no one can help me as I've been told numerous times to phone a different department. He's been a Telkom customer since 2008 which is 10 years, he even recommended me to a mobile Telkom contract which I got March 2018 yet I can't help him from your services. This is absolutely the worst service any business could offer. Please do advise me to the CORRECT DEPARTMENT to contact. Kind Regards PJ Liebenberg