Mtn False advertising

We have a contract at Mtn for Hauwei Lte uncapped wifi that is supposed to take up to 30 users, but can’t even take 2 users without buffering or struggling to access internet etc. For the past few months we have been struggling to have proper internet. This was falsely advertising from Mtn’s side and I am thinking of terminating the contract because they can’t provide a service. This is pathetic.