Bad service with a very bad atitude

I am an expat and was looking to return to the UK, so having been a customer of Barclays for around 20 years with a large sum of cash in my accounts, a mortgage held with them for 9 years and never missed a payment, I thought I'll contact Barclays International to apply for a mortgage. Initial conversations with the customer relations manager were promising so we went ahead and put an offer in for a new build. We then spoke to their mortgage adviser over the phone and it started going down hill from there. The adviser sounded he was in a rush and wanted to end the conversation, what was worst is as soon as we told him it was a new build and the house wouldn't be ready for another 6 months he wasn't interested. When the conversation finished we were left confused as to what happens next. The following day we sent an email to the customer relations manager asking her to call back. She didn't call back so we called her but she was busy so we left a message. Its now been over 2 weeks and we still have not had the call back so I guess thats the end of that relationship! We are now left with a situation where we have put an offer in for a house but cannot secure a mortgage due to the poor service they have provided us. I find this treatment totally unacceptable and will now look into moving all my business with Barclays to another bank. Thanks for wasting my time Barclays!