Again, depends on the jurisdiction, but in the UK filling for a small claims court case would be like £125? And if they don't show up the case will almost certainly be ruled in your favour and Google ordered to pay back whatever they owe you - plus any court costs you incurred. It's really not that difficult. Even paying a lawyer £100 to write and send them a letter "you have 7 days to fix this or we're going to court" would most likely achieve better result than trying to contact their useless customer service.