All these spammer should rot in hell. These days I use Trucaller Premium and most of the calls are auto blocked. Earlier I used to get around 10 to 15 calls per day. Now it down to 1 call a day. There was time I used to have lot of time on hand. The following is the incident that happened some 8 to 9 years ago.
I was getting harassed by ICICI Bank rep to open an investment account with them. I kept telling them that I am not interested in their offer. Yet, they kept calling me. Finally, I decided to teach them a lesson. I told the guy calling me that I will invest 60 Lakhs in Portfolio Management Service and asked him to come meet me in person. He was very excited to come but when I asked him how I can trust my money with him as my advisor he had no answer. I said unless you are qualified / certified in PMS I will not invest. As a way out I asked him to get this branch manager to come meet me so that I can understand their ability to manage my money. I also told them that I am available only on Sunday at 8:00 AM and that they need to be at my place by 8:00 AM sharp.
The next Sunday the Branch Manager and the pest who used to call me everyday came in a Maruti Alto (probably that is what the Branch manager could afford in 2012) arrived at my place by 8:00 AM. I offered them water and Coffee. As soon as the manager was opening hid laptop to explain the PMS I told him that I am not interesting in PMS. He was shocked and asked me why I asked him to come to my place if I am not interested. I said for the same reason why the guy sitting next to you kept calling me even when I said I am not interested in the PMS. I want you to know the torture you guys put me through. The manager quickly apologized and left. I do not know what happened to the sales guy.
These days I do not have the time or patience to go through this anymore.