vumatel is just a ****

I regret paying these people, i made a payment on the 16th of December and i was promised installation within 7 working days, i waited for that and then i received an email saying i should choose a date for installation and which i did but till now i haven't even got my installation and i'm suppose to be working from home but due to them not doing their job i have to go to the office or to my friend's house of which is unacceptable. can i please get my refund so i could get another useful company not this sh*t company please