Frustrated - Not able to use service

Good day. I have both cell phone and router contract with telkom mobile - paying R800-R950 per month.

Since moving I am not able to make or receive calls, Make or receive message, Zero Internet activity 95% of the time. I generally receive messages 2-4 hours later or missed call messages.

I have checked coverage and have no problem anywhere in my area except my complex.I need a booster or any assistance as this is disrupting my work and personal life. I do not understand how I am expected to keep up my part of the contract and pay monthly when I am unable to use your stated services.. Please this needs to be fixed or an alternative solution urgently.