i was by no means SLANDERING

slander

• words falsely spoken that damage the reputation of another
• defame: charge falsely or with malicious intent; attack the good name and reputation of someone; "The journalists have defamed me!" "The article in the paper sullied my reputation"
• aspersion: an abusive attack on a person's character or good name

i was simply saying that your statement that you were the only one offering a full kit was false. i do not doubt that your shop is capable of quality work.