Poor customer service and bad internet connection 5G

From the 3rd of April 2022, their 5G Oppo Router starting acting very weird and very sensitive, you touch the router it goes off. The very same day I wrote them an email.. received feedback after 3working day of bad internet connection and a router that goes off anything. The guy from support team tried to assist but he still failed. I was told I am connected to a tower that is 1,9km away from me while there’s a tower in less than 1km. He then told me he will try and send a technician to come either Friday of Monday fine.. I asked him to please tell the technicians to call me atleast 2hour before they come for I woke from home..The on and off started getting worse on Friday, Monday (2022/04/11) I received a call around 08:55 AM, the guy didn’t even introduce himself to me he just asked if “is the anyone at home” and I asked what does he mean. That’s when he told me he is from rain. I told him I have a very important meeting that I can’t miss in five minutes time can he rather come on Tuesday morning. My meeting didn’t take long as it always does. I phoned him and he told me there nothing he can do his already in Garankuwa mind you I am in Pretoria. I phoned the support team 10x with no luck. I then tried again and one of their support team guys answered and he just hanged on me while trying to explain my problems.. They treat us like we don’t pay.. very bad coustmer service. Poor internet connection while they say it’s 5G,, I wouldn’t recommend anyone to rain.