Poor service from call centre of Supersonic

Good Morning, It was for a five days in a row now that my internet connection is connecting and disconnecting in the evenings when I went onto the internet. After reporting the issue last night this was their reply to me "Thank you for reaching out to us, kindly note that FLTE/5G is best effort and you'll not always get the best speeds most especially when the tower is congested during peak hours." I feel this is not the way to answer a query. They suggested fibre which is not available where I stay and I did inform them I'm on Fixed LTE with a 4G router The next answer I received was "Apologies for the inconvenience however FLTE is best effort hence the connection gets bad sometimes. It does that especially during peak hours. Last answer was Kindly monitor the connection and the connection should be up again since it is best effort. I'm a very disgusted client on the service I received from the call centre