4G/LTE not working

I've been calling in for weeks now and even went in store to get my 4G/LTE connection fixed. It used to work but after an error Vodacom made of switching my number from prepaid to contract and back from contract to prepaid again it just hasn't been working. I've called on way to many times and not going to go to the store again. Been told to wait for some small or call and this just doesn't happen. It's really sad that one only gets a response and proper service when it's done here.