LTE contract not activated after more than 2 months

We took up a Black Friday LTE contract deal with Vodacom. The router was delivered, but without a sim card. After numerous phone calls and e-mails to Vodacom Business and LTE departments as well as visiting a branch, I've been trying to obtain a new sim card. The lost sim card was cancelled by the accounts department for some or other reason and now, after more than 2 months no-one seems to be able to help. Our company spends more than R15000 per month on Vodacom contracts, but obviously that is not enough to ensure a speedy resolution to a problem.