Bad service from preontek

I app**** for for installation of wifi on the 22 of may 2023, the consultant said the installation will happen within 7 days after the application date, i made a follow up 30 may since it was last day of the 7 th day, i sent a whatsup on their line, the response waa not satisfying, i went in person i was told the technician will come on Thursday which is 01/06/23,guess what he never pitched, went there again to their office we came to an agreement thay that they will do the installation on 02/06/23 before 11 since i had an appointment at 12H00,waited the whole morning no one showed up, we called the store the lady gave us the cell phone of the technician, who when we called him questioned why are we calling him in his personal phone, its only the office that is suppose to call him, dropped his phone,we call back the store they say when they try to contact him he doesn't answer his phone, after 20 they called us said they are on the way, hopefully my case will be resolved