Vox telecom poor services

Poor services, they want you to continue paying every month for services that they are poor providing. I have been experiencing slow speed coverage on their LTE coverage. I reported it and for more than 3 months. I continued paying for 3 months and gave them time to fix this issue with their external service providers. They still expected me to pay again in the fourth month and made reference to the T&Cs of the contract even though they are not providing the service as per the contract. Poor service and not efficient in helping customers with their issues.