no response to complaints

.no signal in my home and in my business.after complaining for many months and listing them on hellopeter.they installed boosters in both my home and business.now again after one months usage no signal in both places.their technicians come out ,inspect , nothing happens.waiting again for months ,no response.paying premium subs per month R1500.no service.will not recommend telkom mobile to anyone .hope this report will make them respond as quick as possible because i dont know now who to complain to?