That's a tuff one, where is the proof vw did the t-belt?.
when I bought my golf I called up Lancaster vw and the pri** told me it was done along with the dsg but when I purchased the car I found out non were done. although the seller did do a full service and dsg oil change as I opened the filter and found it was a new one so just topped up the dsg oil from what spilled out and left it at that for now.