terrible services

Hi

I have a problem with Netstar. I renewed my contact with neststar in this year. i have had problems with there devices twice. they came to check and found nothing wrong until recently when i told them that they forgot to remove the old unit. in the interim i have had 3 batteries replaced. i contact them for some compensation and was told that someone will contact me. still waiting. no one is getting back to me. there customer service is ****. I am getting pushed from from person to the next. After service is Bad. there opposition still gives the best services.