MTN

I am seriously considering changing from MTN to another network provider. When trying to connect to the internet my SIM card 'connected without internet. I put it on a different cellphone still "connected without internet', I put it on a router still 'connected without internet'. Yesterday I have spoken to 3 call center reps with no solution to my issue. All alleging have the MTN system in the call center is down. They told me they will reset my SIMcard I must restart wait for 30min and try to reconnect. I did that not success. They took me through my cellphone data setting, still no success. Today I spoke to 2 call center reps and still they fail to assist me. All the agent seem to want to pass me to another... "do this, and call us again". I call again I get a different one "do that, and call us again". Tjo I am tired. I have used MTN for over 15years but now I am fed-up.