Ping Issues

Hello, I have been experiencing issues with my ping and download speeds for a few years now, every time i report the problem Telkom sends me a message saying the problem has been resolved but it has never completely solved the issues, it usually only lasts a few weeks and then it goes back to being bad. My ping is incredibly unstable and every time it rains the line gets even worse and it stays bad until I report a fault and Telkom fixes it again halfway. Please can you fix the problem completely? Maybe there is an issue with the cables or by the exchange or even by my house I don't know but please help me. Every time I report a fault all that is done is a port reset or they change the port by the exchange or so they say. Please find a solution. The problem is not congestion or my modem i bought other modems to test and all of them have the same results, I have tried changing from a 2mb line to 4 to 6 to 8 to 10mb and all of them are the same. I have tried different Ethernet cables and telephone cables and still the same. I have tried Mweb and Openweb and currently Crystal web and its still the same. Over and over again I send WinMTR results and speedtest results and it doesn't help. Please can a specialist contact me or someone on a higher level because the technicians aren't resolving the issue. I use the internet primarily for gaming so I need a low ping, I don't know if I am on interleaving or on fast path but please try put me on fast path even if the line disconnects now and then as long as I can have a better ping please. When I first got the internet at this house on a 10mb speed used to get between 7-12ms ping but that only lasted for a while with a 8.4mbps download and it was incredibly stable I stay less than 3km away form the exchange so distance cant be the issue, but somehow the speed was increased to 9.4mbps download and since then the line was unstable and the ping was unstable, I dont know if thats because of a change to an interleaving line profile, I am just trying to think of a solution. Please help me I dont know what to do anymore, after the storm on monday it wasnt syncing at all for a day then it went back on but it keeps disconnecting or the speeds is extremely low, sometimes it only syncs on ****b download. I would appreciate it if a specialist can contact me because everytime the technicians say a specialist will contact me but it never happens. Thanks for your time.