Shocking service

We switched to Telkom for LTE deal. Initially excellent service. But GB ran out quickly so we upgraded to 100GB. What should have taken one or two days has taken over 2 weeks. Been back to Telkom Claremont. Could not help as technical problem of upgrade loaded twice in error. Phoned many times. Still no internet now for over 2 weeks. Branch does not usually return calls. Sms said now with credit management to complete upgrade. That was two days ago. Still no internet. Call centre is way under staffed. Can wait 20 plus minutes for answer.