Get some cheap 30 day SIM cards from like Mint mobile that you can activate and use a burner numbers. Cheaper than a Burner (the app) number and won't be flagged as a VOIP number preventing you from using it.
On Amazon you can get a starter kit for $0.99 that has 2 SIM cards that gives you 100 texts, 100 minutes of talk and 100MB of data and you won't need the data part.
On Amazon you can get a starter kit for $0.99 that has 2 SIM cards that gives you 100 texts, 100 minutes of talk and 100MB of data and you won't need the data part.