Mtn voicemal services

Good day I'm having problems in activating and deactivating my voicemail My mobile number 083******

i logon to mtnactive online but although i select activate/ deactivated my voicemail the service dont change it just doesnt work

This is the third time im having the same issue with mtn

Being frustrated by not being able to activate/deactivated the services i finally call 808 before/after i roam i call the customer centre and ask to either activate or deactivate my voicemail . Again although the operator confirms that the service has been requested is activated in other words my voicemail is operational when i dial 100/111 the call automatically tells me the number i dialled is invalid this tells me my voicemail is not activated . This execrsize can sometimes require me to call 808 2-3times before the service is performed and each time its the same story

I have phoned customer service 4 times to activate this service i even phoned tech services whom diverts me back to customer services this is very frustrating can you perhaps reset my sim or services in to operate correctly i cant call the customer services 2-3 times to in order to activate such a simple request

I dont think its a customer service advisor problem it must be technical related as in the past i had no problem with either 808 of mtnactive

Im awaiting your soonest feedback