Worst customer service ever

I have been an MTN customer for more than 10 years and today I received the worset customer service ever. I've been sent from pillar to post from 8.30am this morning by their call center agents and each telling me contradicting things, others deciding to put me through without listening to what I had to say and others just hanging up on me. A I wanted was to do a simswap on a number I lost over the weekend. When I'm at the prepaid department they tell me that the number is under contract and that there is nothing they can do. At the contract department they tell me that the number is under prepaid and that they can't help me either. Issue this is my primary number and I use it for all my personal things