Horrible wifi network coverage

I have never had any problems with mtn and have been with them for many years , but I am extremely frustrated and disappointed in the horrible wifi network coverage that I have been getting. It's frustrating that each day I have to restart my wifi router more than 5 times just to get maybe 1mb on network coverage when I signed up for a 10mb line . I pay diligently each month my amount but my network coverage is so bad that I have to buy data to just log on to a Google page. I am so fed up at this horrible service and network and each time I have to call in just to be informed that I should restart it and wait a few minutes. I just want to cancel the wifi with mtn because I cannot be paying for a service I am not receiving .