Be warned about upgrading Telkom internet line

So we received a call from Telkom offering us an upgraded internet line. We accepted on condition none of our other service/conditions with Telkom changed. Then the problems started: 1) None of our emails were getting through - lost 2 days of business because they stuffed it up. No apology, no retrieval of those lost emails. 2) Call forwarding vanished. Was told we had to ask Telkom's permission to keep this facility (despite the fact that we've had it for 16 years and upgraded our line previously without this drama.) Now we have to send them all our fica docs regarding the mobile number we want the landline calls forwarded to, even though this is the exact same number as it has been for 16 years. Oh yeah, and it will take 48 hours after receipt of those docs to remedy their ****-up. What a farce!