What service for calling debtors allows you to do this from different numbers?

Question

Telephony

There are many clients, in general, everyone pays quite well and on time, but in reality, a tough non-payer appears once every couple of months. I would like to call him more often and notify him of the debt, play him a standard text from mp3 or wav. Well, so that the calls would be from different numbers, so that the client could not get off with just a black list, since the case itself is rare, I would like a service so as not to fence the system myself.

Answer 1

you need to be able to stop contacts if the client scored a payment bolt. it should be his smut, not yours.

Answer 2

According to personal experience in telecom:
Automatic calling is the most inefficient and annoying way to knock out debts. In addition, it is very costly.
Look for more efficient approaches.
For example, an SMS reminder a few days before the end of the payment period, if the payment is not made.
Much easier and cheaper to set up.
Showed the best results.

Answer 3

I told such amateurs to call that if they don’t stop, I will go to the police and ask them to file a case against them for extortion. Stopped.
And in phones there is a good option - a white list.