Mweb bad service

I was asked to change my LTE subscription from cell C to telkom which i agreed to. This is where all the problems started. I was advised my husband can sign for the delivery of the new sim accompanied with a certified copy of my ID. Upon delivery my husband was advised this cannot happen and as a result no new sim delivered. Since then i have been calling Mweb to arrange the delivery to myself which has still no happened after 3 weeks. The worst is being promised they will listen to calls and revert back to me with feedback which has never materialized. Because of the lack of service and the sim not being delivered im on a 50gig which is running out instead of what i requested which is the 200gig per month. Unfortunately i have a contract due to taking the router with but can guarantee i will cancel this as soon as the contract is done. I think my next step is the ombudsman seeing im getting no where with these mweb fools.