MTN Uncapped LTE Unstable everyday-Connected without Internet

Even since I had jumped to MTN uncapped, it always been the same error that shows up "Connected without Internet". I tried to reach out to MTN several times, emails, calls, no success. Every week I complain about the same issue. This is also a new contract which I anticipate to cancel soon. Jumped from Telkom which had stable connection(just expensive contract I had with them). MTM Uncapped lte 10MB seemed like an affordable option but they have unstable network, which is surprising for a company with financial muscles to strengthen their infrastructure. They dont resolve issues but send you from pillar to post, like they dont know their job very well.