I once got an obscene phone call that was actually for my mother.
Someone called at around 7:15 a.m. and the housekeeper answered the phone (we were still quite young and she'd come in to make our school lunch; my mother had health problems). Now, while our housekeeper understood and spoke good English, it was also quite clear English was not her first language. I figure the obscene caller must have said something like, "Put the madam (employer) on the phone" because HK passed the phone to me saying, "He wants your mother." I took the phone and said, "I'm sorry, my mother is sleeping at the moment. Can I help you?" (I sound like a 5 year-old on the phone, even today.)
Obscene Caller: What are you doing?
Me: Um, if you give me your number my mother will call you back.
OC: What are you wearing?
Me (remember, very young, I'm talking in the late '70s or early '80s): My school uniform.
OC: How are things there?
Me: Please, I'm going to be late for school, just leave a message and...
OC: I heard you give bl** j**s.
Me: (looking at phone incredulously): *Click*
So, to recap: some OC phoned a random number, asked the housekeeper
to put her employer on the phone, spoke to said person's young child, and then decided to use rude language. I mean, wouldn't it have been easier to just hang up after the HK answered and try another number? Also, who phones people at 7 a.m. for obscene reasons? Honestly, the guy had no life!
When my mom got a cellphone we kept getting phone calls from some guy who would leave messages in Zulu or one of the other indigenous languages. I only speak a little bit of Zulu, and my mom spoke maybe four words. Even once when he got a live person, he would not believe he had the wrong number and kept switching back to Zulu. Until one day I SMSed him, "You have the wrong number. Stop calling. We only speak English." The calls stopped.
I got a few SMSes from a lady who wrote them in Zulu/other language. I SMSed back, "Wrong number." She then called, and when I answered she said, "What does that mean?" I said, "You sent those SMSes to the wrong number. This is my phone." She said, "Oh, I'm sorry, my darling! God bless you!" in an embarrassed tone. I hope she finally managed to get the person she was looking for. (It's usual for indigenous South Africans to use endearments when speaking to people.)
Our housekeeper's one son used to call our landline collect (in the time before cellphones) to demand his mother buy him things. At first we'd accept the charges, thinking it was an emergency. But then he started calling every few days and his mother used to get very upset. "He knows I can't afford Nike takkies (sneakers)! But he swore at me when I said I couldn't buy them for him!" After that, when the operator would say, "I have a collect call from XLocation, will you accept the charges?" we'd say, "No." They were always incredulous, "No? What do you mean, no?" We'd say, "No, we will not accept the charges." "But there's a child on the line!" "Tell him his mother is not buying him anything!" After refusing the charges a few times, he stopped calling. But seriously, what kind of child phones his mother at work to harrass her?!