complications breathing; rapid heart beating; difficulty breathing; This is a spontaneous report from a contactable consumer (patients mother). A 17-years-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, formulation: solution for injection, lot number: unknown, expiry date: unknown) via unspecified route of administration, on 01Aug2021 (age at vaccination: 17-years) as dose 1, single for covid-19 immunisation. Patients medical history and concomitant medications were not re-ported. Patient took vaccine around 1 o'clock, and around 9 o'clock that night she had a complications breathing and rapid heart beating so they were thinking about a follow up with the heart specialist on Thursday, on an unspecifed date in Aug2021. So patient mothers question was whether she should take the second vaccine? Because she read about myocarditis and need someone to guide me and tell me if her daughter needs to take a second vaccination having so difficult with the first one. Explained that Pfizer was unable to provide treatment recommendations. Explained that she would be happy to check our information regarding reports of symptoms that her daughter experienced but the question that she was asking if her daughter should get a second dose based on the symptoms experienced would need to be addressed by a treating HCP. Explained one more time that they were unable to provide treatment recommendations. At this point caller stated: so you just don't know you just gonna do what do what the other people did, you just gonna read. At this point caller asked: are you going to document this? Explained that she will be happy to connect her to our safety group to document her daughter experience. Caller agreed to be transferred to safety, stated that she already reported that to pharmacy. Pharmacy told her to call and report it to Pfizer. Upon a verification caller indicated that her daughter got a vaccine on 01Aug2021, stated her daughter was due for a second dose of the vaccine this weekend stated: I am scared to death to give her a second one. Initially she spoke to safety agent withheld however our call got disconnected. She got back on the line to explain to the caller what happen and offer to connect her to another agent. After explanation caller stated. She had been doing this for over an hour and this was ridiculous that nobody wanted to answer her call be-cause of what happened they don't want to document it. She was going to stay on this phone all day if I have to. Caller stated: you know what they connect me to people but then you know what happens when I start to talk about my daughter situation they hung up on me. Caller stated next time I am going to have a lawyer to use my phone and he will say what happened because every time I start to talk about my situation, my daughter they hung up on me. Explained to the caller that I will make another attempt to connect her to safety and that I will document her feedback. As caller was transferred to safety caller also mentioned to safety that her daughter had a difficulty breathing. Patients mother wanted to know what does Pfizer recommend for people who experience Microcardia? She had read it can get worse with the second vaccine. She wanted advice. How was Pfizer telling people to get this vaccine when they cannot give advice. The outcome of event was unknown.