I just got done looking at the underlying contract language as set forth in the pro forma service agreement in the tariff and it specifically says that the max rate would apply unless a discount or negotiated rate has been agreed to.
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	4	nsubj:pass	4:nsubj:pass	_
2	just	just	ADV	RB	_	4	advmod	4:advmod	_
3	got	get	AUX	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	4	aux:pass	4:aux:pass	_
4	done	do	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	_
5	looking	look	VERB	VBG	VerbForm=Ger	4	advcl	4:advcl	_
6	at	at	ADP	IN	_	10	case	10:case	_
7	the	the	DET	DT	Definite=Def|PronType=Art	10	det	10:det	_
8	underlying	underlying	ADJ	JJ	Degree=Pos	10	amod	10:amod	_
9	contract	contract	NOUN	NN	Number=Sing	10	compound	10:compound	_
10	language	language	NOUN	NN	Number=Sing	5	obl	5:obl:at	_
11	as	as	SCONJ	IN	_	12	mark	12:mark	_
12	set	set	VERB	VBN	Tense=Past|VerbForm=Part	10	acl	10:acl:as	_
13	forth	forth	ADV	RB	_	12	advmod	12:advmod	_
14	in	in	ADP	IN	_	19	case	19:case	_
15	the	the	DET	DT	Definite=Def|PronType=Art	19	det	19:det	_
16	pro	pro	X	FW	Foreign=Yes	19	amod	19:amod	_
17	forma	forma	X	FW	Foreign=Yes	16	flat:foreign	16:flat:foreign	_
18	service	service	NOUN	NN	Number=Sing	19	compound	19:compound	_
19	agreement	agreement	NOUN	NN	Number=Sing	12	obl	12:obl:in	_
20	in	in	ADP	IN	_	22	case	22:case	_
21	the	the	DET	DT	Definite=Def|PronType=Art	22	det	22:det	_
22	tariff	tariff	NOUN	NN	Number=Sing	19	nmod	19:nmod:in	_
23	and	and	CCONJ	CC	_	26	cc	26:cc	_
24	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	26	nsubj	26:nsubj	_
25	specifically	specifically	ADV	RB	_	26	advmod	26:advmod	_
26	says	say	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	4:conj:and	_
27	that	that	SCONJ	IN	_	32	mark	32:mark	_
28	the	the	DET	DT	Definite=Def|PronType=Art	30	det	30:det	_
29	max	max	ADJ	JJ	Degree=Pos	30	amod	30:amod	_
30	rate	rate	NOUN	NN	Number=Sing	32	nsubj	32:nsubj	_
31	would	would	AUX	MD	VerbForm=Fin	32	aux	32:aux	_
32	apply	apply	VERB	VB	VerbForm=Inf	26	ccomp	26:ccomp	_
33	unless	unless	SCONJ	IN	_	41	mark	41:mark	_
34	a	a	DET	DT	Definite=Ind|PronType=Art	35	det	35:det	_
35	discount	discount	NOUN	NN	Number=Sing	41	nsubj:pass	41:nsubj:pass	_
36	or	or	CCONJ	CC	_	38	cc	38:cc	_
37	negotiated	negotiate	VERB	VBN	Tense=Past|VerbForm=Part	38	amod	38:amod	_
38	rate	rate	NOUN	NN	Number=Sing	35	conj	35:conj:or|41:nsubj:pass	_
39	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	41	aux	41:aux	_
40	been	be	AUX	VBN	Tense=Past|VerbForm=Part	41	aux:pass	41:aux:pass	_
41	agreed	agree	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	32	advcl	32:advcl:unless	_
42	to	to	ADP	IN	_	41	obl	41:obl	SpaceAfter=No
43	.	.	PUNCT	.	_	4	punct	4:punct	_
