Signal has gone from OK to "There is no vodacom"

I live in Walkerville, Gauteng.

I used to have acceptable data and voice signal..however in February/March it suddenly became no signal. Vodacom has even sent someone to come do a signal test (during lockdown) and he agreed there is a problem. However nothing has been done as yet. I am pretty sure I can have the contract canceled because vodacom has changed their service level ? When i go to search for network operator manually on my phone it doesn't even detect vodacom...it detect the black, yellow and blue cellphone providers....