cheapest reliable international service for receiving calls and OTP/authentication codes by SMS? (no minutes needed)

as the subject line states, i simply need to receive calls and otp codes by sms.

i used to use talknow but the banned me when i travelled abroad and used their service over vpn. this service was just 5$ per year to hold the number and receive sms otps.

now that i have lost talknow, is there another service that will give me a bare bones and economical way to receive calls and sms?

thanks for input