Lying company cannot deliver on promises

I went to the Mall of the South Store. I was there om 3 February. I did an eye test and they said that they will order my specs and sunglasses (which frame I supp****). They firstly never told me that I need to pay upfront. I contacted headoffice and they ordered the glasses. I received my normal glasses last week, but was told that I will have to wait until 18 March for my sunnies. They said that the lab had backlogs. I contacted headoffice again and they said they would follow up with the store. Today I got a call to tell me that hopefully I will have my sunnies 18 March. I phoned Headoffice again and they told me that the lenses were ordered incorrectly three times. The store **** to me. Head office phoned me back and told me my glasses will be ready by the 17th. One day earlier when specsavers tell you the glasses would be ready in 3 to 4 weeks they look Try 7 weeks. I actually want my money back and go to someone that does not lie to me. This is ridiculous, and it seems like escalating the matter to headoffice does not mean anything. They have no power over branches. That is the perception. I will be going on social media with this Absolutely ********** service. DO NOT USE SPECSAVERS as they lie and cannot deliver according to the promise