My 4Mb ADSL line is slow

My 4Mb ADSL line is slow or lost signal, I have reported it and still slow after 3 months and they closed my ref: *********x40. I got an sms to say if the problem is not solved replay to the message and when i did i got this message " "the number u provided was invalid" and this morning i got another message to say "If the problem still exists please go to http://http://residential.telkom.co.za/emailcontact-recidential/escalationform.htm" but it comes up with "The request did not specify a valid virtual host." Look at this. Saturday 2018-06-23 09:16 Ping: 12ms Download: 1.53Mbps Upload: 0.3Mbps 10:10 Ping: 11ms Download: 1.24Mbps Upload: 0.39Mbps 11:16 Ping: 11ms Download: 2.88Mbps Upload: 0.4Mbps better 12:18 Ping: 11ms Download: 3.42Mbps Upload: 0.4Mbps better 13:15 Ping: 10ms Download: 1.76Mbps Upload: 0.32Mbps 14:45 Ping: 46ms Download: 0.75Mbps Upload: 0.24Mbps 18:05 Ping: 53ms Download: 1.15Mbps Upload: 0.28Mbps 19:33 Ping: 31ms Download: 0.12Mbps Upload: 0.26Mbps 20:30 Ping: 335ms Download: 0.52Mbps Upload: 0.05Mbps Sunday 201806-24 05:53 Ping: 43ms Download: 1.87Mbps Upload: 0.3Mbps 06:20 Ping: 468ms Download: 0.84Mbps Upload: 0.01Mbps 06:48 Ping: 42ms Download: 1.95Mbps Upload: 0.35Mbps 07:38 Ping: 42ms Download: 1.96Mbps Upload: 0.35Mbps 08:05 Ping: 43ms Download: 1.93Mbps Upload: 0.35Mbps