TSS Telco is a business that provides you with a private technician to help you with your internet when your service provider won’t.
If you have an internet problem, be careful you don’t hire the wrong person. Many other service professionals do a bit of this work on the side, but they can get stuck and sometimes make matters worse. This is like hiring a handyman to do your plumbing instead of getting a plumber. So you're better off contacting an internet tech for your internet needs.