Problems with SHAW ISP DNS server

I am having a problem with a domain name that I recently moved hosting for. The domain in questions is bcmsa.ca and is registered with http://www.domainsatcost.ca. Two weeks ago I moved the hosting from midphase to a hostgator VPS with my own custom DNS. Which are ns1.whistlerwebhosting.com and ns2.whistlerwebhosting.com.  I updated the names servers at domainsatcost.ca and the  site transition went smooth and everything seemed to be working however a few days later the site stopped working for my client. (but not for me) I think I have narrowed the problem down to their IPS's DNS servers which are run by shaw. They run DNS servers at 64.59.144.16. and 64.59.144.17.

If you do an NSLOOKUP and then enter
server 64.59.144.16
the enter
set type=SOA
then enter
bcmsa.ca

the following is returned

Primary name server = dns1.midphase.com

It seems as though shaw DNS servers are refusing to update and even worse they seem to be flopping back and forth between the new and old nameservers.

A call to the shaw tech support said that the SOA was set incorrectly but follow ups with domainsatcost hostgator and the old host midphase seem a say everything is set correctly.

Is it possible that there is a problem with shaws DNS servers how can I indicate this to them or is there in fact something set wrong which I may be missing.

I know DNS servers take a while to update but this has been over 2 weeks now

I was able to temporarily fix the problem by asking the old host to make a redirect from their dns to my new hosting IP which is 50.22.103.52

I would like to cancel the account with the old host though and insure that this is running properly.

Can anyone provide insite into the issue?
whistlerwebdevAsked:
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dlonganCommented:
@whistlerwebdev

I performed a nslookup for bcmsa.ca and it returned the IP 50.22.103.52
I confimed that the domain name bcmsa.ca whois records point to:
ns1.whistlerwebhosting.com
ns2.whistlerwebhosting.com

Used nslookup to point to Shaw (assuming the correct dns server)
> server ns10sc.cg.shawcable.net
Default Server:  ns10sc.cg.shawcable.net
Address:  204.209.208.51
> bcmsa.ca
Server:  ns10sc.cg.shawcable.net
Address:  204.209.208.51

Name:    bcmsa.ca
Served by:
- f.root-servers.net
          192.5.5.241
- g.root-servers.net
          192.112.36.4
- h.root-servers.net
          128.63.2.53
- i.root-servers.net
          192.36.148.17
- j.root-servers.net
          192.58.128.30
- k.root-servers.net
- l.root-servers.net
- m.root-servers.net
- a.root-servers.net
          198.41.0.4
- b.root-servers.net
          192.228.79.201

So all indications are that the dns tranfer went good and you are correct that their ISP has issues
Suggest calling Shaw and have them perform some nslookups to confirm problem.
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whistlerwebdevAuthor Commented:
Thanks for the insight
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