Couldnt care less about customer troubles

I started receiving sms notifications every time a transaction occurred on a standard bank account that was not mine. I contacted Standard bank several times and when i finally got a response they told me that my number was linked to two accounts that were not mine and that they would remove my number. I also got an email to say that this issue has been resolved. A few days later i was still receiving sms notifications. I mailed them once again with the reference number, after waiting again i got a reply asking for the account number in question which i had already supp**** before. I told them i think the account holder is mistakenly handing out my number to people as reference who deposit money into their account and even when money is drawn from the account. I sent my last email asking for their help on 15/5/2015 and still haven't gotten a reply. I work and study part time so I cant afford to nag in order to receive customer service. Without the help of standard bank I am just going to keep on receiving these annoying messages.