Which sentences would be the better to write in a C.V.?

0Hello,02br
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00I have dilemna between 2 sentences...02br
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00Which one would be the best to write in a C.V. in your opinion?02br
01blockquote

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11b101 - Attained "business-to-business" service excellence by dealing effectively and confidently with conflictual situations on a daily basis, using professional, polite and clear telephone manner and letter writing skills demonstrating a high communication ability.12b12br
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11b102 - Delivered first-class "business-to-business" service excellence by dealing effectively and confidently with conflictual situations on a daily basis, using professional, polite and clear telephone manner and letter writing skills demonstrating a high communication ability.12b12br
12blockquote

10I am not sure about the first one as it might convey the idea that it took me time to be able to deliver a high quality service but it is only my understanding as a non-English native...02br
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00So what do you think?02br
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00Thanks in advance for your tips/advice/corrections02br
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00Cheers,02br
00Ludovic02br
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00P.S.: If you spotted any mistake above, do not hesitate to let me know 05002br
00 010id1