Makhado Trusses poor service and workmanship

I app**** for roof for my house in March 2021. I was made to choose from two designs by Stanley at Makhado Trusses. What was installed was not part of the choices and not what I even chose. When I complained, I was charged more for their mistake corrections materials. Even today(end of June 2021), the corrections have not been done. I call every week and get promised by Stanley or their receptionist, to be called back, in vain.