Harassment continious

So after being quiet for a mont after I was notified that my MoMo promotion ticket that I have opted out of, was resolved the harrassment has started again. The ticket was obviously not resolved. How can people not do their job right? Evidence of sms reveived today at 14:03. :: Y'ello, find R2.00 MoMo voucher No:***5 from MoMo. KEY: 1234, redeem via cashin on MoMo app or *120*151#. Expiry: 5days. Queries 083135. Auth FSP T&Cs