After my last complaint of numerous debits resulting from SMS Alerts from my banks, I have not had to regret deactivating the service on all my bank accounts. It has saved me the unnecessary charges that comes with them and also I do not have to bother about anyone having to see my bank transactions via my SMS alerts on my phone.
My candid advice is that if you do not have any major reason for receiving your bank transactions via SMS, go to your bank and deactivate it. The alerts you get on your mails are free and should serve you the same purpose.
Have a great day!