Yes, this will be an issue. It could be one of the two listed bellow. Fortunately there are rules put in place and all the calibrachoa that are sold retail require a licensed Trademarked tag. Given that is was spelled as one word: Terracotta, it would be a good guess to say it is "Can-Can® Terracotta"
Proven Winners "Million Bells® Terra Cotta" aka Sunbekist : vigorus growth spreading
or
"Can-Can® Terracotta" aka Balcantera
Can-Can grows about 10"-15" high and 10"-15" wide, so more compact than "Million Bells® Terra Cotta"
The best way to clarify is to look at the plant tag
