Phone Harassments Daily

I've banked with this bank for over 7 years and as of recently I've been getting phone multiple calls a day from FNB; when I answer, no one speaks and they drop the line. When I call back, no response.

This has been going on for 2 months and I'm exhausted to receive empty calls. This is harassment because as far as I'm aware I do not owe FNB. It's ****ing annoying to be getting a call then no one speaks on the other end.

Its time I switch banks because I will not stand for these harassments and poor services.