We can do a Popup notification along with changing the number on the Web page, we can also put out a Critical message which will send an Email to customers.
1	We	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	3	nsubj	3:nsubj	_
2	can	can	AUX	MD	VerbForm=Fin	3	aux	3:aux	_
3	do	do	VERB	VB	VerbForm=Inf	0	root	0:root	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	6:det	_
5	Popup	popup	NOUN	NN	Number=Sing	6	compound	6:compound	_
6	notification	notification	NOUN	NN	Number=Sing	3	obj	3:obj	_
7	along	along	ADP	IN	_	9	mark	9:mark	_
8	with	with	SCONJ	IN	_	9	mark	9:mark	_
9	changing	change	VERB	VBG	VerbForm=Ger	3	advcl	3:advcl:along_with	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	11:det	_
11	number	number	NOUN	NN	Number=Sing	9	obj	9:obj	_
12	on	on	ADP	IN	_	15	case	15:case	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	15:det	_
14	Web	web	NOUN	NN	Number=Sing	15	compound	15:compound	_
15	page	page	NOUN	NN	Number=Sing	9	obl	9:obl:on	SpaceAfter=No
16	,	,	PUNCT	,	_	3	punct	3:punct	_
17	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	20	nsubj	20:nsubj	_
18	can	can	AUX	MD	VerbForm=Fin	20	aux	20:aux	_
19	also	also	ADV	RB	_	20	advmod	20:advmod	_
20	put	put	VERB	VB	VerbForm=Inf	3	parataxis	3:parataxis	_
21	out	out	ADP	RP	_	20	compound:prt	20:compound:prt	_
22	a	a	DET	DT	Definite=Ind|PronType=Art	24	det	24:det	_
23	Critical	critical	ADJ	JJ	Degree=Pos	24	amod	24:amod	_
24	message	message	NOUN	NN	Number=Sing	20	obj	20:obj|27:nsubj	_
25	which	which	PRON	WDT	PronType=Rel	27	nsubj	24:ref	_
26	will	will	AUX	MD	VerbForm=Fin	27	aux	27:aux	_
27	send	send	VERB	VB	VerbForm=Inf	24	acl:relcl	24:acl:relcl	_
28	an	a	DET	DT	Definite=Ind|PronType=Art	29	det	29:det	_
29	Email	email	NOUN	NN	Number=Sing	27	obj	27:obj	_
30	to	to	ADP	IN	_	31	case	31:case	_
31	customers	customer	NOUN	NNS	Number=Plur	27	obl	27:obl:to	SpaceAfter=No
32	.	.	PUNCT	.	_	3	punct	3:punct	_
