Poor service and connectivity

I have a rain one 5G home basic package and experiencing the worst service and connectivity ever. I started with a 4G package and upgraded to 5G when it became available in my area and the connectivity was excellent until the beginning of last month when I had no connectivity for 3days. So after struggling to get hold of an agent after 3 days the agent noticed a mistake on the system and apologized for the inconvenience and assist me with the problem but that was only the beginning as after that I have no connectivity for most of the time and can't get through to them. I'm even requesting call backs but nobody is getting back to me until Friday I tried the sales department and It didn't take long for a salesperson to answer n put me through to support and from there the agent just heard about my problem and put me on hold checking everytime if I dropped the call. So aventualy I dropped the call after 15minutesof waiting and try again asking directly for a supervisor or manager but the agent told me there was none available and logged a call for a manager to get in touch with me and I'm still waiting. My naybour opposite me have the package and experiencing the same problem. The other problem I have is the 2 mobile Sim cards doesn't work anymore so I have no use of that also and I'm being charged the full amount. Totally fed up of this and looking out for better service providers.