Ok, Wow! Sorry to hear that. Well, you get what you pay for I'm afraid.
When you contacted your ISP, did you ask them to perform the
"end-to-end" test I suggested? Did they tell you that all they restart their modem every day for
ALL their Customers, or just you? This could be due to poor-quality or aging copper wiring in the home or building you live in.
So, you're choice for improved service costs you extra money; exactly how much are we talking? If it's $30 a month more, that's $360 per year; it seems that my Router solution of $50-$70 US is certainly less than that. This could make dealing with a poor-quality ISP much easier.
Since you didn't ask your ISP to do the
"end-to-end" test, you don't know about your wiring issue. If you change ISPs to another provider who also uses ADSL Modem, they will still be using your phone lines and if you have home internal wiring issues, that will still
NOT fix your problem even if you pay them another $1,000 per year! You will need to ask the other ISPs if any of them are Cable Modem Broadband. If so, they will have a separate feed from the phone lines into your home or building via Coax cable, and you don't need to rely on ancient or degraded copper wiring in your home. Being in Europe, it's quite possible your home or building could be hundreds of years old, and who knows how many years ago the phone lines were installed there. Another alternative I could suggest would be to go to Satellite Dish Internet. In the US, we call this Dish Network. It provides Broadband network speed, but uses Satellite signal and Coax cable wired directly into your home or building to get you Internet--no reliance on internal existing telephone wiring as with ADSL/DSL. This is used frequently in rural areas in the US and Canada where there are no phone lines in the home or other ISPs (DSL or Cable) within 50-200 miles or more. Here, that costs about $75-$85 a month or so, and usually includes Basic Cable TV. I had this setup about 8 years ago and it worked pretty good for me.
You can check the ISPs in your Country and see how much they charge for
Satellite Dish Broadband and if it's available in your location. It may be less than what your Cable Broadband ISP may charge you. Cable Broadband in the US is the most expensive Internet and considered premium by both price and download/upload speed.
You have several options available to you, but most involve spending more money to get a better quality of service. What's that worth to you?? I suggest you evaluate this carefully, and review my choices. Many people are not aware of the problems that are created by poor or aging in-home wiring that affect DSL's service quality (QoS).
Best of luck,
<<<BBJ>>>