One additional point - ask “what results did you get?” when asking for the testimonial. That way other potential clients can see how important the work you have done is
I think you are writing the effect of obtaining testimoinal - you can ask what your customer gained as a result of your work, but bear in mind that if you quote them on this, you do need their consent to make public that they engaged you for the work (can incur accusations of "false endorsement", nevermind representation/misrepresentation laws, whcih differ between countries).
For further actions, you may consider blocking this person and/or reporting abuse
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One additional point - ask “what results did you get?” when asking for the testimonial. That way other potential clients can see how important the work you have done is
I think you are writing the effect of obtaining testimoinal - you can ask what your customer gained as a result of your work, but bear in mind that if you quote them on this, you do need their consent to make public that they engaged you for the work (can incur accusations of "false endorsement", nevermind representation/misrepresentation laws, whcih differ between countries).