Standard Bank persists sending unsolicited sms's

I have recently been receiving sms's from Standard Bank inviting me to take up insurance with them. I have sms'd 'stop' to opt out, but have just received another sms.<br> <br> Standard Bank - don't even bother with platitudes or telling me it takes time to deactivate. You have sent me sms's without my giving you permission to use my cell phone number. You are violating various codes of practice and laws - see [URL Removed] to update yourselves.