4G/LTE

I recently migrated from contract to prepaid, from the day the migration was completed I never received 4G connection from areas that I would normally get 4G. I called the vodacom customer center and I went to a vodacom store only to be told that nothing is wrong with the profile setup of the account. I just find it very hard to see this as coincidence that the service quality from vodacom dropped on the day I no longer am not on a contract.I will not be renewing my still active contacts either.