By David Huntley & Kieren Williams One holidaymaker has claimed her birthday trip to a five-star hotel was “ruined” by a gastric illness. Jill Craig flew to the Riu Cabo Verde, in Cape Verde, in September to celebrate her 40th birthday with her partner Andrew Weatherley. But during the two week trip, booked through TUI UK, Jill, from Stanley, County Durham, claims she felt sick with gastric symptoms including stomach cramps, diarrhoea, and nausea. The retail worker sought out medical advice as she felt worse and worse, and was put on an IV drip at the resort. But even after she returned to the…