No Urgent Customer Service

Had an eSIM through AirMobile (Afrihost). On new iPhone 15 Pro I cannot get the number activated. I have quadruple checked APN settings and all ok. Afrihost say there’s nothing they can do but report to MTN. This means my banking App no longer works and various international accounts are inaccessible. I was told MTN will take 48 hours to fix this. This has created a massive problem. I’ve had this number for well over 2 decades so getting a new SIM from Vodacom won’t help. Extremely disappointed that an eSIM transfer to e new phone is such a problem. Had I know this I would never have made the switch in the first place