The phrase "a support line" is correct and usable in written English.
It can be used in contexts where you refer to a line of assistance or help, often in customer service or technical support scenarios.
Example: "If you have any issues with your account, please call our support line for immediate assistance."
Alternatives: "a help line" or "a customer service line."
Looking back, what I needed was information, a support line, and someone to dispel the grief that was drowning me.
Its services include respite day care in the Surrey district, a support line operating during weekends and evenings, an outings programme, and social networking opportunities for carers.
New systems like OnStar, pioneered by General Motors, automatically put out a call for help if you have an accident, and you can reach a support line somewhere if you have problems with your car.
A support line that Boy's Own set up for people unfortunate enough to wear shiny MA1 bomber jackets.
GAVI opened a support line for countries to address their health systems priorities by submitting proposals based on identified health systems weaknesses and to stimulate the use of research evidence to help inform the ways to address the weaknesses so identified.
In fact, the above inequality holds for every integrable function (f:[a,b]to mathbb{R}) that admits a supporting line at the midpoint (c=(a+b)/2), and fits into the supporting-secant line inequality h_{1}(x) leq f(x) leq h_{2}(x),quad x in[a,b].
(15) For example, the function (f(x)=sqrt{|x|}) is integrable on ([-1,1]), admits a supporting line at zero, and satisfies equation (15), so it satisfies equation (14).
He said a number of changes had been made, including a confidential support line, a "female focus" officer attached to each unit to provide advice, and better awareness of how to make complaints.
It was a lovely dummy and dart from Rhys Webb, a great support line from Dan Lydiate and then a deft offload from the big man for Biggar to score.
In response, Mr. Barrett told of a client who called up a technical support line to complain that his monitor screen had gone black.
