u/FirePakora420

I keep receiving repeated calls from random numbers claiming to be about cable/internet renewal. They are not from etisalat, but they somehow know my name. I have already told them I am not interested, blocked many of the numbers, and the calls still keep coming from different numbers.
This is starting to feel like harassment and I am getting worried. Has anyone in Dubai dealt with this before? What is the best way to report it properly, and which authority should I contact? Any practical advice or support would be appreciated.