poor service at Telkom contact

Im very disappointed with the service at Telkom. I singed up a contract in March 2021 i was helped by Mpumeleo Mjwara and my monthly premium was R350 and it was top up. The sales person made an open line i only realized when I received my statement and the premuim was not what we agreed on. After deducting R1300 what we did not agree on they locked my phone i dont have access to data ,sms nor making calls. Its so difficult to get hold of the Mpumeleo the sales man as he wont reply your emails nor call you. The service from his manager Leveshan Govender its like you are been help by a trainee he will never get back to you I am the one who is always following up to a point that i had to take the legal route. I would never refer anyone to Telkom their service is very poor. My Contact is new but now they say i owe them around R6000