Impactguru — Asking for donation frequently

I have requested on multiple occasions (including emails on Jan, Feb and Mar.June) to be removed from your communication list. Despite this, I continue to receive calls, including one on [[protected]].
They are calling me from different numbers and asking me to pay very frequently. I told that i was in a down time, had not job but still they are convincing me to donate some money. This is not all accepted. Totally frustrating experience this was.