[Skunkworks] Safaricom

Hi i have been having an issue with safaricom (seems like the networks is on a safari ..pun intended) i have a full bar and i cant make calls and when i do i can only see to talk for 5 min the "Connection error" , text messages take forever ,service number enquiries "No network Coverage" ..but hey i can surf!! so what is going on? and please dont tell me to move from safaricom -- GG