Help Creating Multiple Seller Central Accounts

Problem:
We are going to set up many more seller central accounts in 2024. Each time we do so, we need to verify the account with an OTP sent to a mobile phone. If that mobile number is recognized with another account, or a personal Amazon account, we can’t proceed.

I’ve looked into apps that provide verified phone numbers for 2FA, but you only get 1 number for around $50 a month. Which isn’t affordable with the amount of accounts needed.

Does anyone have experience creating multiple seller central accounts? Or does anyone have a workaround for this problem? Thanks in advance!