As part of the annual service my local garage noticed the water pump needed replacing. They replaced but then few days later got leak and it was the seal behind the pump that had failed. They stated no issue on their part. 6 weeks later I have coolant leaking all over the drive and they are telling me it's the oil coolant seal. Are these related at all? Costs are prohibitively expensive too, should I be expecting a big bill? Thanks for any help