Home WiFi issues (router never had a strong connection ever)

I’ve been having connectivity issues with my home router for a couple of months. Recently it’s gotten bad, and I have to constantly switch it off and on again a couple of times during the day. I have been trying to get hold of a consultant but kept being transferred from one person to the other for about 30 minutes. I eventually call again and throw a fit because I’m not calling for free (I’m using my airtime here). I eventually get a consultant to assist and we on the call for about 30 minutes. I tell her that my call is going to cut in a few seconds because my airtime is going to run out. And there was no response. She was no longer on the other side but the call was still going on. The call eventually cuts and I received no call back my issue has not been resolved. Vodacom is such a pain to deal with!!