How to receive SMS from hundreds of SIM cards?

Question

Telephony

Greetings.
I don’t understand what to do with phone numbers / SIM cards.
To confirm 100 accounts of a conditional social network, 100 numbers are needed. You can order a hundred virtual numbers in some SMS service, get a confirmation code and use the social network, but after a while the social network will require account confirmation by phone number, which, of course, will not be in this service. Then the account can be considered lost, and this is undesirable.
You can buy 100 SIM-cards from the operator, conclude 100 contracts, get 100 SIM-cards, but it will cause the worst tension. You will have to insert a SIM card into the phone, turn it on, turn it off, insert a new card, and so on 98 more times. You will also need to monitor the balance, from time to time perform paid actions in order to suspend some period of charging for not using the number (about 3 months), and for this you will need to insert the SIM card 100 times and send an SMS or call. It will take a lot of time, and it will be very stressful. You can not bother and just replenish the balance, but then, according to preliminary estimates, you will have to pay about 10K per month so that the number is not turned off for the lack of paid actions (about 3 rubles from the operator per day * 30 days * 100 numbers).
How do people manage so many numbers? How can all this be simplified in such a way that after a few months it would be possible to receive SMS to the number assigned to the account and not insert them into the phone to perform paid actions? Maybe there are some special terminals where you can plug in a lot of SIM-cards at once and on some display would show incoming messages to a certain number or connect it somehow to a computer? Surely there is something?

Answer 1

Destroy them all with clones
https://russian.alibaba.com/g/sim-bank-512.html

Answer 2

sms-reg.com Heaps of services
... or buy ready-made accounts :)