LTE slower than 3G

Telkom Mobile number ***<br> <br> Been very slow from last week Friday. This is a fixed aerial installation pointing to a tower in Montana that is only used for data, so the LTE signal is full strength.<br> <br> I'm paying R1399 per month for 100GB and expect decent speeds as they were before: 40Mb/s down, 6Mb/s up. <br> Currently only getting 3Mb/s down.<br> <br> If this cannot be fixed, will have to cancel the contract due to non service delivery.