HUURKOR PLEASE ATTEND TO TENANTS` COMPLAINS

Huurkor , please source services from legit contractors . At Jaspit building , some contractor was hired to remove satellite dish from walls and mount them on top of the roof. Since end october 2018 my tv hasnt been working due to their very bad connection. i made several attempts to arrange with their technician and nothing worked, now this tech is not picking up my calls. what must i do, Huurkor please discharge your responsibilities. Asseblief...