Different callback numbers for same friend

Thanks Danielle for your answer. While a friend's list may be useful and considered for the future, it is the only way to tell, easily at least, if a given friend has different Rebtel callback numbers by number (home, cell,...).

I have been back and forth with Rebtel Customer Support on the issue pointing at the entries in my address book which are inconsistent and I also know who "hijacked" the number that Rebtel commonly assigns to me... my wife. We both have a Rebtel account and share some of the same friends phone numbers in Belgium. Depending on who added the friend's number first, Rebtel allocates either ...298 or ...299. The result is that we end up having a mix of ...298 and ..299 numbers to share with our friends.
To illustrate how confusing it can get:
- if my sister dials from her cell the ...298, it rings my phone, if she dials ...299 it's my wife's
- if my sister dials from her landline the ...298, it rings my wife's phone and the 299 rings mine.

While I imagine it would be an easy fix on your side, that is switching the numbers in Rebtel's database so that our friends have one consistent number to call either my wife or me, I was stunned by Customer Support answer: "no problem, that's the way it is".

I had expected at least an acknowledgement of the issue and a rationale for not fixing it. Needless to say that while I was a regular user of Rebtel, I am now looking at alternatives if this cannot be resolved.

Note: if this helps, I did try to delete the friend from both my account and my wife's, and add them back (in my account first) but to no avail: Rebtel recalls what callback it assigned earlier.
Even if my issues get resolved, the design/logic to assign callback numbers should check if a Rebtel number was already assigned in the country for another friend: if so, use that one if still available (that is, no other Rebtel account has added that friend phone yet).

Rgds,
Yannick