Countering flood (DDoS) attacks on phone numbers?

Question

Skype

Quite often I see questions on Habré (and on other resources too) on how to counter telephone DDoSy (attacks in which a significant number of calls from different numbers are received on the victim’s phone number, which makes it impossible to use telephone communication from the attacked number).
I wanted to clarify with the respected habra community whether a service to protect against such a phenomenon will be in demand, are you ready to use such a service, what, in your opinion, should be its price?
Also, please indicate, if you don't mind, the country in which you are interested in such services.
I think that it’s not worth creating a habratopic for this, so I’m creating it in “questions and answers”.

Answer 1

At the moment, I personally am not interested in such a service, but I would immediately go to the note and bookmark it.
RF. Paying by the hour will be the best option, kmk, the price is depending on the level of attack.

Answer 2

1. Well, many will remember, but they will use it only when the problem appears personally with them. And now there are few of them.
2. I think that it is cheaper and easier for many private traders to change their number than to pay at least a little more money. But for companies - yes, it can be profitable. Offhand, from $1,000 per month.
3. Private traders will demand more spam sms filtering service. Moreover, it is a service, and not just a program. For $30 a month - many will give. At $5 a month, there will be a blockage in general.
And most importantly, the peak demand will be in the next 2-3 years.

Answer 3

Thank you, then we will not spend resources to work in this direction in the near future, since there are still a lot of other projects.